According to state-run news agency Xinhua, China has successfully cloned a Kunming wolfdog (similar to a German Shepherd) using the skin cells of a seven-year-old female named Huahuangma, a working police dog. Here’s the English translation of the article from Xinhua: KUNMING, March 25 (Xinhua) — A cloned dog, believed to be the first of […]
Many techniques of the study of history exist. One of the most innovative is what is called “environmental history” in which human castes, classes, and professions are given ecological/economic niches that allow their behavior to operate as if species in an ecosystem.
It is this history that Edmund Russell lays out in his Greyhound Nation: A Coevolutionary History of England, 1200-1900. This is a book that anyone interested in dog history should read, for it is an odd comprehensive history of the redefinition of a particular type of dog through the social, economic, and political changes of a nation shifting from feudalism to capitalism and democracy.
Russell’s book is not the history of “the greyhound,’ the breed we know today. That breed is included in this work, but it is also the history of the proto-whippets that worked the rabbit warrens and larger forms of greyhound that were used to hunt deer and wolves. It is also the story of eventual breed standardization within the context of the rise of the kennel club and the closed racing greyhound registries.
Russll begins with the earliest mentions of greyhounds in England, which is around the year 1200. The dogs belonged solely to the patrician class in the feudal system, and different forms of greyhound were used to on different quarry. Large greyhounds coursed the deer and the wolf. Mid-sized ones worked hares and foxes. Smaller ones were used to catch rabbits in enclosed warrens. And commoners were never allowed to own a any of these dogs, except under very explicit circumstances.
For over five centuries, various forms of greyhound were used in this way, but then in the late eighteenth century, the forces of democracy and early capitalism began to change the way the English related to their land. The Enclosure of the commons meant that vast tracts of territory could be set aside of the protection and promotion of hares for what was called “club coursing.”
In this coursing clubs, patricians ran their dogs on these hare estates. They were clubs that were quite exclusive, and the commoners could not own these dogs. Russell includes the account of a commoner convicted for owning greyhound, which the commoner tries to pass off as an Italian greyhound. But he is still convicted of the crime.
At this time, greyhounds are bred to lurchers and bulldogs to improve their runs on hares, and we learn about the various eccentricities of Lord Orford, a founder of the Swaffham Coursing Society. He was an extreme spendthrift, infamously selling countless priceless family paintings to Catherine the Great of Russia to pay off debts that he had accrued. He also died while running one of his hounds, Czarina, at a Swaffham meet. He had been ill but left his bed to run the hound. He is said to have either died in the saddle or fell from the saddle then died.
As the eighteenth century progresses into the nineteenth, big coursing events, called public coursing, became a popular rural activity. The famous Waterloo Cup began in 1836, and as the sport became popular for spectators, a National Coursing Club was founded to standardize coursing rules. Commoners were eventually allowed to own these dogs, and coursing became more democratic and meritocratic endeavor. The working classes begin to have leisure time and money, which they put toward gambling on coursing events and speculation on various hounds.
This democratic shift in coursing coincided with the rise of the Kennel Club and the purebred dog fancy. Here, Russell introduces us to Sewallis Shirley, the same founder of the Kennel Club and retriever fancier who has been mentioned on this blog many times. Russell portrays Shirley as purely patrician. He is anti-democratic and opposed to tenant rights on his estate in Ireland, and his anti-democratic leanings lead to his promotion of the show greyhound over the coursing one.
As the nineteenth century draws to a close, we see the closing of the greyhound registry with both the Kennel Club and the National Coursing Society. No longer would anyone consider crossing to lurchers or bulldogs to make a better greyhound. The goal was to produce a superior greyhound within the population already ascribed as greyhounds.
Russell leaves us at this juncture but alludes to the rise of greyhound racing in the twentieth century in which the dogs are reborn as objects on which to wager in a new event.
This type of history could, in theory, be written about any type of dog in virtually any European country. However, this particular breed in this particular country is documented well back in the Medieval period, and because it was owned solely by the wealthy originally, the documentation can be followed fairly easily into the modern era.
If one is interested in an academic history of dogs, this book is a great read. Russell uses the primary sources in his work so clearly, and the prose is posited so logically that one can easily follow the winding history of running dogs in England.
These dogs were made to run, but we now live in a world where they are slowly losing their purpose. Nation after nation, state after state, coursing is losing its legality. Professional greyhound racing is likely on the way out in much of the world, but we will keep them alive. We will run them, even if it is just after plastic bags raced along on pulleys.
Just like humans, pets deserve a special treat every so often, and times like these call for dog owners to go out of their way to do something their dogs will love. Surprises of this nature go a long way in showing your canine companion that you appreciate them for all the unconditional love they give you.
Dog owners have all sorts of questions. Among the most commonly asked, is whether dogs should be given pig’s ears for a treat. To help make an informed decision, we provide the following advantages/disadvantages list:
1. It is almost impossible for a dog to turn down a pig’s ears dog treat. They find the chews simply delicious and will even love and obey you more. Perhaps this is the most appealing advantage of this type of dog’s chews. At the very least, you know that your gift will be received with a lot of joy and love.
2. Giving your dog pig’s ears allows you to kill two birds using one stone. Apart from it being a gesture of appreciation, you get to capitalize on the benefit the chews have on your dog’s teeth. The chews keep your companion’s teeth clean and the gums healthy, and this translates to fresh breath. Furthermore, the chews are also odorless.
3. Since these type of chews have a thick hide and density, they permit easy chewing particularly for small dogs, delicate chewers, as well as senior dogs.
4. Compared to other dog chews, pig’s ears are relatively inexpensive and readily available. They are sold both online and in local pet stores.
1. This type of dog chews is associated with a dangerous level of fat – especially for dogs that are prone to obesity. As such, if you decide to administer it to your dog, moderate the intake.
2. If your dog has a sensitive stomach, stay clear of pig’s ears chews as they may cause vomiting or diarrhea.
3. Sometimes, pig’s ears are infected with salmonella bacteria; an infection that can lead to gastrointestinal infection. Some of the symptoms of salmonella infection include diarrhea, lethargy, and vomiting. For this reason, the chews should only be purchased from a reputable company. Ensure that your source usually conducts heat treatment on their products for about half a day. Heat treatment is an effective way of eliminating possible bacteria.
Note: salmonella is transmittable from pigs or dogs to humans – the more reasons you should handle dog’s feces carefully. Also, remember to wash your hands thoroughly after interacting with the chews.
When administered as a treat, pig’s ears are a good way of rewarding your dog for their company, love, and obedience. As long as you observe safety rules, they are the best for small dogs, senior dogs, and delicate chewers. To prevent or curb incidences of digestive obstructions, choking and the consequences of the highly sensitive stomach, supervise your dog while it chews.
For more dog holidays, visit our Pet Holidays page! Writer Jonathan Swift once stated that “Every dog must have his day,” and for our tail-wagging chums in the springtime of their life…
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Would your dog be fooled? Until next time, Good day, and good dog!
AN API INVESTIGATIVE REPORT
This information provided by the Animal Protection Institute.
“Plump whole chickens, choice cuts of beef, fresh grains, and all the wholesome nutrition your dog or cat will ever need.” (Sounds good?)
These are the images pet food manufacturers promulgate through the media and advertising. This is what the $ 11 billion per year U.S. pet food industry wants consumers to believe they are buying when they purchase their products.
This report explores the differences between what consumers think they are buying and what they are actually getting. It focuses in very general terms on the most visible name brands — the pet food labels that are mass-distributed to supermarkets and discount stores — but there are many highly respected brands that may be guilty of the same offenses.
What most consumers don’t know is that the pet food industry is an extension of the human food and agriculture industries. Pet food provides a market for slaughterhouse offal, grains considered “unfit for human consumption,” and similar waste products to be turned into profit. This waste includes intestines, udders, esophagi, and possibly diseased and cancerous animal parts.
Three of the five major pet food companies in the United States are subsidiaries of major multinational companies:
- Nestlé (Alpo, Fancy Feast, Friskies, Mighty Dog, and Ralston Purina products such as Dog Chow, ProPlan, and Purina One)
- Heinz (9 Lives, Amore, Gravy Train, Kibbles n Bits, Nature’s Recipe, Vets)
- Colgate-Palmolive (Hill’s Science Diet Pet Food).
Other leading companies are:
- Procter & Gamble (Eukanuba and Iams)
- Mars (Kal Kan, Mealtime, Pedigree, Sheba, Waltham’s)
From a business standpoint, multinational companies owning pet food manufacturing companies is an ideal relationship. The multinationals have increased bulk-purchasing power; those that make human food products have a captive market in which to capitalize on their waste products, and pet food divisions have a more reliable capital base and, in many cases, a convenient source of ingredients.
There are hundreds of different pet foods available in this country. And while many of the foods on the market are similar, not all of the pet food manufacturing companies use poor quality and potentially dangerous ingredients.
Although the purchase price of pet food does not always determine whether a pet food is good or bad, the price is often a good indicator of quality. It would be impossible for a company that sells a generic brand of dog food at $ 9.95 for a 40-lb. bag to use quality protein and grain in its food. The cost of purchasing quality ingredients would be much higher than the selling price.
The protein used in pet food comes from a variety of sources. When cattle, swine, chickens, lambs, or any number of other animals are slaughtered, the choice cuts such as lean muscle tissue are trimmed away from the carcass for human consumption. However, about 50% of every food-producing animal does not get used in human foods. Whatever remains of the carcass — bones, blood, intestines, lungs, ligaments, and almost all the other parts not generally consumed by humans — is used in pet food, animal feed, and other products. These “other parts” are known as “by-products,” “meat-and-bone-meal,” or similar names on pet food labels.
The Pet Food Institute — the trade association of pet food manufacturers — acknowledges the use of by-products in pet foods as additional income for processors and farmers: “The growth of the pet food industry not only provided pet owners with better foods for their pets, but also created profitable additional markets for American farm products and for the byproducts of the meat packing, poultry, and other food industries which prepare food for human consumption.”1
Many of these remnants provide a questionable source of nourishment for our animals. The nutritional quality of meat and poultry by-products, meals, and digests can vary from batch to batch. James Morris and Quinton Rogers, two professors with the Department of Molecular Biosciences, University of California at Davis Veterinary School of Medicine, assert that;
“There is virtually no information on the bioavailability of nutrients for companion animals in many of the common dietary ingredients used in pet foods. These ingredients are generally by-products of the meat, poultry and fishing industries, with the potential for a wide variation in nutrient composition. Claims of nutritional adequacy of pet foods based on the current Association of American Feed Control Officials (AAFCO) nutrient allowances (‘profiles’) do not give assurances of nutritional adequacy and will not until ingredients are analyzed and bioavailability values are incorporated.”2
Meat and poultry meals, by-product meals, and meat-and-bone meal are common ingredients in pet foods. The term “meal” means that these materials are not used fresh, but have been rendered. What is rendering? Rendering, as defined by Webster’s Dictionary, is “to process as for industrial use: to render livestock carcasses and to extract oil from fat, blubber, etc., by melting.” Home-made chicken soup, with its thick layer of fat that forms over the top when the soup is cooled, is a sort of mini-rendering process. Rendering separates fat-soluble from water-soluble and solid materials, and kills bacterial contaminants, but may alter or destroy some of the natural enzymes and proteins found in the raw ingredients. Meat and poultry by-products, while not rendered, vary widely in composition and quality.
What can the feeding of such products do to your companion animal? Some veterinarians claim that feeding slaughterhouse wastes to animals increases their risk of getting cancer and other degenerative diseases. The cooking methods used by pet food manufacturers – such as rendering and extruding (a heat-and-pressure system used to “puff” dry foods into nuggets or kibbles) — do not necessarily destroy the hormones used to fatten livestock or increase milk production, or drugs such as antibiotics or the barbiturates used to euthanize animals.
ANIMAL AND POULTRY FAT
You may have noticed a unique, pungent odor when you open a new bag of pet food — what is the source of that delightful smell? It is most often rendered animal fat, restaurant grease, or other oils too rancid or deemed inedible for humans.
Restaurant grease has become a major component of feed grade animal fat over the last fifteen years. This grease, often held in fifty-gallon drums, is usually kept outside for weeks, exposed to extreme temperatures with no regard for its future use. “Fat blenders” or rendering companies then pick up this used grease and mix the different types of fat together, stabilize them with powerful antioxidants to retard further spoilage, and then sell the blended products to pet food companies and other end users.3
These fats are sprayed directly onto dried kibbles or extruded pellets to make an otherwise bland or distasteful product palatable. The fat also acts as a binding agent to which manufacturers add other flavor enhancers such as digests. Pet food scientists have discovered that animals love the taste of these sprayed fats. Manufacturers are masters at getting a dog or a cat to eat something she would normally turn up her nose at.
Wheat, Soy, Corn, Peanut Hulls, and Other Vegetable Protein
The amount of grain products used in pet food has risen over the last decade. Once considered filler by the pet food industry, cereal and grain products now replace a considerable proportion of the meat that was used in the first commercial pet foods. The availability of nutrients in these products is dependent upon the digestibility of the grain. The amount and type of carbohydrate in pet food determines the amount of nutrient value the animal actually gets. Dogs and cats can almost completely absorb carbohydrates from some grains, such as white rice. Up to 20% of the nutritional value of other grains can escape digestion. The availability of nutrients for wheat, beans, and oats is poor. The nutrients in potatoes and corn are far less available than those in rice. Some ingredients, such as peanut hulls, are used for filler or fiber, and have no significant nutritional value.
Two of the top three ingredients in pet foods, particularly dry foods, are almost always some form of grain products. Pedigree Performance Food for Dogs lists Ground Corn, Chicken By-Product Meal, and Corn Gluten Meal as its top three ingredients. 9 Lives Crunchy Meals for cats lists Ground Yellow Corn, Corn Gluten Meal, and Poultry By-Product Meal as its first three ingredients. Since cats are true carnivores — they must eat meat to fulfill certain physiological needs — one may wonder why we are feeding a corn-based product to them. The answer is that corn is much cheaper than meat.
In 1995, Nature’s Recipe pulled thousands of tons of dog food off the shelf after consumers complained that their dogs were vomiting and losing their appetite. Nature’s Recipe’s loss amounted to $ 20 million. The problem was a fungus that produced vomitoxin (an aflatoxin or “mycotoxin,” a toxic substance produced by mold) contaminating the wheat. In 1999, another fungal toxin triggered the recall of dry dog food made by Doane Pet Care at one of its plants, including Ol’ Roy (Wal-Mart’s brand) and 53 other brands. This time, the toxin killed 25 dogs.
Although it caused many dogs to vomit, stop eating, and have diarrhea, vomitoxin is a milder toxin than most. The more dangerous mycotoxins can cause weight loss, liver damage, lameness, and even death as in the Doane case. The Nature’s Recipe incident prompted the Food and Drug Administration (FDA) to intervene. Dina Butcher, Agriculture Policy Advisor for North Dakota Governor Ed Schafer, concluded that the discovery of vomitoxin in Nature’s Recipe wasn’t much of a threat to the human population because “the grain that would go into pet food is not a high quality grain.”3
Soy is another common ingredient that is sometimes used as a protein and energy source in pet food. Manufacturers also use it to add bulk so that when an animal eats a product containing soy he will feel more sated. While soy has been linked to gas in some dogs, other dogs do quite well with it. Vegetarian dog foods use soy as a protein source.
Many chemicals are added to commercial pet foods to improve the taste, stability, characteristics, or appearance of the food. Additives provide no nutritional value. Additives include emulsifiers to prevent water and fat from separating, antioxidants to prevent fat from turning rancid, and artificial colors and flavors to make the product more attractive to consumers and more palatable to their companion animals.
Adding chemicals to food originated thousands of years ago with spices, natural preservatives, and ripening agents. In the last 40 years, however, the number of food additives has greatly increased.
All commercial pet foods contain preservatives. Some of these are added to ingredients or raw materials by the suppliers, and others may be added by the manufacturer.
Because manufacturers need to ensure that dry foods have a long shelf life to remain edible after shipping and prolonged storage, fats included in pet foods are preserved with either synthetic or “natural” preservatives.
BHA – BHT – ETHOXIQUIN
Synthetic preservatives include butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT), propyl gallate, propylene glycol (also used as a less-toxic version of automotive antifreeze), and ethoxyquin. For these antioxidants, there is little information documenting their toxicity, safety, or chronic use in pet foods that may be eaten every day for the life of the animal.
Potentially cancer-causing agents such as BHA, BHT, and ethoxyquin are permitted at relatively low levels. The use of these chemicals in pet foods has not been thoroughly studied, and long term build-up of these agents may ultimately be harmful. Due to questionable data in the original study on its safety, ethoxyquin’s manufacturer, Monsanto, was required to perform a new, more rigorous study. This was completed in 1996. Even though Monsanto found no significant toxicity associated with its own product, in July 1997, the FDA’s Center for Veterinary Medicine requested that manufacturers voluntarily reduce the maximum level for ethoxyquin by half, to 75 parts per million. While some pet food critics and veterinarians believe that ethoxyquin is a major cause of disease, skin problems, and infertility in dogs, others claim it is the safest, strongest, most stable preservative available for pet food. Ethoxyquin is only approved for use in human food for preserving spices, such as cayenne and chili powder, at a level of 100 ppm — but it would be very difficult to consume as much chili powder every day as a dog would eat dry food. Ethoxyquin has never been tested for safety in cats.
Some manufacturers have responded to consumer concern, and are now using “natural” preservatives such as Vitamin C (ascorbate), Vitamin E (mixed tocopherols), and oils of rosemary, clove, or other spices, to preserve the fats in their products. Other ingredients, however, may be individually preserved. Fish meal, and some prepared vitamin mixtures used to supplement pet food, contain chemical preservatives. This means that your companion animal may be eating food containing several types of preservatives. Not all of these are required to be disclosed on the label. However, due to consumer pressure, preservatives used in fat are now required to be listed on the label.
ADDITIVES IN PROCESSED FOODS
pH control agents
Flour treating agents
Surface active agents
Surface finishing agents
Oxidizing and reducing agents
While the law requires studies of direct toxicity of these additives and preservatives, they have not been tested for their potential synergistic effects on each other once ingested. Some authors have suggested that dangerous interactions occur among some of the common synthetic preservatives.
Natural preservatives do not provide as long a shelf life as chemical preservatives, but they are safe.
PROCESSING – How Pet Food Is Made
Although feeding trials are no longer required for a food to meet the requirements for labeling a food “complete and balanced,” most manufacturers perform palatability studies when developing a new pet food. One set of animals is fed a new food while a “control” group is fed a current formula. The total volume eaten is used as a gauge for the palatability of the food. The larger and more reputable companies do use feeding trials, which are considered to be a much more accurate assessment of the actual nutritional value of the food. They keep large colonies of dogs and cats for this purpose, or use testing laboratories that have their own animals.
Most dry food is made with a machine called an expander or extruder. First, raw materials are blended, sometimes by hand, other times by computer, in accordance with a recipe developed by animal nutritionists. This mixture is fed into an expander and steam or hot water is added. The mixture is subjected to steam, pressure, and high heat as it is extruded through dies that determine the shape of the final product and puffed like popcorn. The food is allowed to dry, and then is usually sprayed with fat, digests, or other compounds to make it more palatable. Although the cooking process may kill bacteria in pet food, the final product can lose its sterility during the subsequent drying, fat coating, and packaging process. A few foods are baked at high temperatures rather than extruded. This produces a dense, crunchy kibble that is palatable without the addition of sprayed on palatability enhancers. Animals can be fed about 25% less of a baked food, by volume (but not by weight), than an extruded food.
Ingredients are similar for wet, dry, and semi-moist foods, although the ratios of protein, fat, and fiber may change. A typical can of ordinary cat food reportedly contains about 45-50% meat or poultry by-products. The main difference between the types of food is the water content. It is impossible to directly compare labels from different kinds of food without a mathematical conversion to “dry matter basis.”5 Wet or canned food begins with ground ingredients mixed with additives. If chunks are required, a special extruder forms them. Then the mixture is cooked and canned. The sealed cans are then put into containers resembling pressure cookers and commercial sterilization takes place. Some manufacturers cook the food right in the can.
There are special labeling requirements for pet food, all of which are contained in the annually revised Official Publication of AAFCO.6 The use of the terms “all” or “100%” cannot be used “if the product contains more than one ingredient, not including water sufficient for processing, decharacterizing agents, or trace amounts of preservatives and condiments.” Products containing multiple ingredients are covered by AAFCO Regulation PF3(b) and (c). The “95% rule” applies when the ingredient(s) derived from animals, poultry, or fish constitutes at least 95% or more of the total weight of the product (or 70% excluding water for processing).
Because all-meat diets are usually not nutritionally balanced, they fell out of favor for many years. However, due to rising consumer interest in high quality meat products, several companies are now promoting 95% and 100% canned meats as a supplemental feeding option.
The “dinner” product is defined by the 25% Rule, which applies when “an ingredient or a combination of ingredients constitutes at least 25% of the weight of the product” (excluding water sufficient for processing) as long as the ingredient(s) shall constitute at least 10% of the total product weight; and a descriptor that implies other ingredients are included in the product formula is used on the label. Such descriptors include “recipe,” “platter,” “entree,” and “formula.” A combination of ingredients included in the product name is permissible when each ingredient comprises at least 3% of the product weight, excluding water for processing, and the ingredient names appear in descending order by weight.
The “with” rule allows an ingredient name to appear on the label, such as “with real chicken,” as long as each such ingredient constitutes at least 3% of the food by weight, excluding water for processing.
The “flavor” rule allows a food to be designated as a certain flavor as long as the ingredient(s) are sufficient to “impart a distinctive characteristic”to the food. Thus, a “beef flavor” food may contain a small quantity of digest or other extract of tissues from cattle, without containing any actual beef meat at all.
What Happened to the Nutrients?
Dr. Randy L. Wysong is a veterinarian and produces his own line of pet foods. A long time critic of pet food industry practices, he said, “Processing is the wild card in nutritional value that is, by and large, simply ignored.
Heating, cooking, rendering, freezing, dehydrating, canning, extruding, pelleting, baking, and so forth, are so commonplace that they are simply thought of as synonymous with food itself.”9 Processing meat and by-products used in pet food can greatly diminish their nutritional value, but cooking increases the digestibility of cereal grains.
To make pet food nutritious, pet food manufacturers must “fortify” it with vitamins and minerals. Why? Because the ingredients they are using are not wholesome, their quality may be extremely variable, and the harsh manufacturing practices destroy many of the nutrients the food had to begin with.
Commercially manufactured or rendered meat meals and by-product meals are frequently highly contaminated with bacteria because their source is not always slaughtered animals. Animals that have died because of disease, injury, or natural causes are a source of meat for meat meal. The dead animal might not be rendered until days after its death. Therefore the carcass is often contaminated with bacteria such as Salmonella and Escherichia coli. Dangerous E. Coli bacteria are estimated to contaminate more than 50% of meat meals. While the cooking process may kill bacteria, it does not eliminate the endotoxins some bacteria produce during their growth and are released when they die. These toxins can cause sickness and disease. Pet food manufacturers do not test their products for endotoxins.
Mycotoxins — These toxins comes from mold or fungi, such as vomitoxin in the Nature’s Recipe case, and aflatoxin in Doane’s food. Poor farming practices and improper drying and storage of crops can cause mold growth. Ingredients that are most likely to be contaminated with mycotoxins are grains such as wheat and corn, cottonseed meal, peanut meal, and fish meal.
Labeling – Back to Top
The National Research Council (NRC) of the Academy of Sciences set the nutritional standards for pet food that were used by the pet food industry until the late 1980s. The NRC standards, which still exist and are being revised as of 2001, were based on purified diets, and required feeding trials for pet foods claimed to be “complete” and “balanced.” The pet food industry found the feeding trials too restrictive and expensive, so AAFCO designed an alternate procedure for claiming the nutritional adequacy of pet food, by testing the food for compliance with “Nutrient Profiles.” AAFCO also created “expert committees” for canine and feline nutrition, which developed separate canine and feline standards. While feeding trials can still be done, a standard chemical analysis may be also be used to determine if a food meets the profiles.
Chemical analysis, however, does not address the palatability, digestibility, or biological availability of nutrients in pet food. Thus it is unreliable for determining whether a food will provide an animal with sufficient nutrients.
To compensate for the limitations of chemical analysis, AAFCO added a “safety factor,” which was to exceed the minimum amount of nutrients required to meet the complete and balanced requirements.
The digestibility and availability of nutrients is not listed on pet food labels.
The 100% Myth:
Your Pet Food Provides All the Nutrition A Pet needs
The idea of one pet food providing all the nutrition a companion animal will ever need for its entire life is a myth.
Cereal grains are the primary ingredients in most commercial pet foods. Many people select one pet food and feed it to their dogs and cats for a prolonged period of time. Therefore companion dogs and cats eat a primarily carbohydrate diet with little variety. Today, the diets of cats and dogs are a far cry from the primarily protein diets with a lot of variety that their ancestors ate.
Health Problems Caused by Inadequate Nutrition
The problems associated with a commercial diet are seen every day at veterinary establishments. Chronic digestive problems, such as chronic vomiting, diarrhea, and inflammatory bowel disease are among the most frequent illnesses treated.
These are often the result of an allergy or intolerance to pet food ingredients. The market for “limited antigen” or “novel protein” diets is now a multi-million dollar business. These diets were formulated to address the increasing intolerance to commercial foods that animals have developed. The newest twist is the truly “hypoallergenic” food that has had all its proteins artificially chopped into pieces smaller than can be recognized and reacted to by the immune system.
Dry commercial pet food is often contaminated with bacteria, which may or may not cause problems. Improper food storage and some feeding practices may result in the multiplication of this bacteria. For example, adding water or milk to moisten pet food and then leaving it at room temperature causes bacteria to multiply. Yet this practice is suggested on the back of packages of some kitten and puppy foods.
Pet food formulas and the practice of feeding that manufacturers recommend have increased other digestive problems. Feeding only one meal per day can cause the irritation of the esophagus by stomach acid. Feeding two smaller meals is better.
Feeding recommendations or instructions on the packaging are sometimes inflated so that the consumer will end up purchasing more food. However, Procter & Gamble allegedly took the opposite tack with its Iams and Eukanuba lines, reducing the feeding amounts in order to claim that its foods were less expensive to feed. Independent studies commissioned by a competing manufacturer suggested that these reduced levels were inadequate to maintain health. Procter & Gamble has since sued and been countersued by that competing manufacturer, and a consumer complaint has also been filed seeking class-action status for harm caused to dogs by the revised feeding instructions.
Urinary tract disease is directly related to diet in both cats and dogs. Plugs, crystals, and stones in cat bladders are often triggered or aggravated by commercial pet food formulas. One type of stone found in cats is less common now, but another more dangerous type has become more common. Manipulation of manufactured cat food formulas to affect acidity in urine and the amount of some minerals has directly affected these diseases. Dogs also form stones as a result of their diet.
History has shown that commercial pet food products can cause disease. An often-fatal heart disease in cats and some dogs was shown to be caused by a deficiency of an amino acid called taurine. Blindness is another symptom of taurine deficiency. This deficiency occurred because of inadequate amounts of taurine in cat food formulas. Cat foods are now supplemented with taurine. New research suggests that supplementing taurine may also be helpful for dogs, but as yet few manufacturers are adding extra taurine to dog food. Inadequate potassium in certain feline diets also caused kidney failure in young cats; potassium is now added in greater amounts to all cat foods.
Rapid growth in large breed puppies has been shown to contribute to bone and joint disease. Excess calories in manufactured puppy food formulas promote rapid growth. There are now special puppy foods for large breed dogs. But this recent change will not help the countless dogs who lived and died with hip and elbow disease.
There is also evidence that hyperthyroidism in cats may be related to excess iodine in commercial pet food diets.9 This is a new disease that first surfaced in the 1970s, when canned food products appeared on the market. The exact cause and effect are not yet known. This is a serious and sometimes terminal disease, and treatment is expensive.
Many nutritional problems appeared with the popularity of cereal-based commercial pet foods. Some have occurred because the diet was incomplete. Although several ingredients are now supplemented, we do not know what ingredients future researchers may discover that should have been supplemented in pet foods all along. Other problems may result from reactions to additives. Others are a result of contamination with bacteria, mold, drugs, or other toxins. In some diseases the role of commercial pet food is understood; in others, it is not. The bottom line is that diets composed primarily of low quality cereals and rendered meat meals are not as nutritious or safe as you should expect for your cat or dog.
What Consumers Can Do
Write or call pet food companies and the Pet Food Institute and express your concerns about commercial pet foods. Demand that they improve the quality of ingredients in their products.
Call API with any information about the pet food industry, specific manufacturers, or specific products.
Print out a copy of this report for your veterinarian to further his or her knowledge about commercial pet food.
Direct your family and friends with companion animals to this website, to alert them of the dangers of commercial pet food. Or request copies of our Fact Sheet on Selecting a Good Commercial Food.
Stop buying commercial pet food. Or if that is not possible, reduce the quantity of commercial pet food and supplement with fresh foods. Purchase one of the books available on pet nutrition and make your own food. Be sure that a veterinarian or a nutritionist writes the recipes to ensure that they are balanced and complete.
Check our sample diets you can make yourself.
Please be aware that API is not a veterinary hospital, clinic, or service. API does not and will not offer any medical advice. If you have concerns about your companion animal’s health or nutritional requirements, please consult your veterinarian.
For Further Reading about Animal Nutrition
The Animal Protection Institute recommends the following books, many of which include recipes for home-prepared diets:
Rudy Edalati. Barker’s Grub: Easy, Wholesome Home Cooking for Your Dog. Three Rivers Press. ISBN 0-609-80442-1.
Richard H. Pitcairn, D.V.M., and Susan Hubble Pitcairn. Dr. Pitcairn’s Complete Guide to Natural Health for Dogs and Cats. Rodale Press, Inc. ISBN 0-87596-243-2.
Kate Solisti-Mattelon and Patrice Mattelon. The Holistic Animal Handbook: A Guidebook to Nutrition, Health, and Communication. Beyond Words Publishing Co. ISBN 1-5827-0023-0.
Donald R. Strombeck. Home-Prepared Dog & Cat Diets: The Healthful Alternative. Iowa State University Press. ISBN 0-8138-2149-5.
Celeste Yarnall. Natural Cat Care. Journey Editions. ISBN 1-8852-0363-2.
Celeste Yarnall. Natural Dog Care. Journey Editions. ISBN 0-7858-1123-0.
The books listed above are a fraction of all the titles currently available, and the omission of a title does not necessarily mean it is not useful for further reading about animal nutrition.
Please note: The Animal Protection Institute is not a bookseller, and cannot sell or send these books to you. Please contact your local book retailer or an online bookstore, who can supply these books based on the ISBN provided for each title.
What API is Doing
API is a liaison to the AAFCO Pet Food and Ingredient Definitions Committees. By attending AAFCO meetings, we hope to learn more about the industry itself and about potential avenues for bringing about change.
An API representative attends other petfood industry meetings to give voice to our and the consumers’ concerns about pet food.
API is involved in lobbying for the federal regulation of pet food and the development of more stringent standards for the quality of ingredients used.
API will continue to provide information to the public about the pet food industry and the products it promotes.
API is preparing a detailed scientific paper documenting the numerous problems associated with commercial pet food, for presentation to veterinarians.
Who to Write
AAFCO Pet Food Committee
Dr. Rodney Noel — Chair
Office of Indiana State Chemist
1154 Biochemistry Building
West Lafayette, IN 47907-1154
FDA – Center for Veterinary Medicine
7500 Standish Place
Rockville, MD 20855
Pet Food Institute
2025 M Street, NW, Suite 800
Washington, DC 20036
Association of American Feed Control Officials Incorporated. Official Publication 2001. Atlanta: AAFCO, 2001.
Barfield, Carol. FDA Petition, Docket Number 93P0081/CP1, accepted February 25, 1993.
Becker, Ross. “Is your dog’s food safe?” Good Dog!, November/December 1995, 7.
Cargill, James, MA, MBA, MS, and Susan Thorpe-Vargas, MS. “Feed that dog! Part VI.” DOGworld, December 1993, 36.
Case, Linda P., M.S., Daniel P. Carey, D.V.M., and Diane A. Hirakawa, Ph.D. Canine and Feline Nutrition: A Resource for Companion Animal Professionals. St. Louis: Mosby, 1995.
Coffman, Howard D. The Dry Dog Food Reference. Nashua: PigDog Press, 1995.
Corbin, Jim. “Pet Foods and Feeding.” Feedstuffs, July 17, 1996, 80-85.
Knight-Ridder News Syndicate. “Nature’s Recipe Recalls Dog Food That Contains Vomitoxin.” August 28, 1995.
Morris, James G., and Quinton R. Rogers. “Assessment of the Nutritional Adequacy of Pet Foods Through the Life Cycle.” Journal of Nutrition, 124 (1994): 2520S-2533S.
Newman, Lisa. What’s in your pet’s food? Tucson & Phoenix: Holistic Animal Care, 1994.
New York State Department of Agriculture and Markets. 1994 Commercial Feed Analysis Annual Report. Albany: Division of Food Inspection Services, 1995.
Parker, J. Michael. “Tainted dog food blamed on corn.” San Antonio Express News, April 1, 1999.
“Petfood activist.” Petfood Industry, September/October 1991, 4.
Pet Food Institute. Fact Sheet 1994. Washington: Pet Food Institute, 1994.
Phillips, Tim, DVM. “Rendered Products Guide.” Petfood Industry, January/February 1994, 12-17, 21.
Pitcairn, Richard H., D.V.M., Ph.D., and Susan Hubble Pitcairn. Dr. Pitcairn’s Complete Guide to Natural Health for Dogs & Cats. Emmaus: Rodale, 1995.
Plechner, Alfred J., DVM, and Martin Zucker. Pet Allergies: Remedies for an Epidemic. Inglewood: Wilshire Book Co., 1986.
Rhode Island Department of Environmental Management, Division of Agriculture. 1994 Report of the Inspection and Analysis of Commercial Feeds, Fertilizers and Liming Materials. Providence: Division of Agriculture, 1995.
Roudebush, Philip, DVM. “Pet food additives.” JAVMA, 203 (1993): 1667-1670.
Rouse, Raymond H. “Feed Fats.” Petfood Industry, March/April 1987, 7.
Sellers, Richard. “Regulating petfood with an open mind.” Petfood Industry, November/December 1990, 41-44.
Smith, Carin A. “Research Roundup: Changes and challenges in feline nutrition.” JAVMA 203 (1993), 1395-1400.
Strombeck, Donald. R. Home-Prepared Dog and Cat Foods: The Healthful Alternative. Ames: Iowa State University Press, 1999.
Winters, Ruth, M.S. A Consumer’s Dictionary of Food Additives. New York: Crown, 1994.
Wysong, R. L. “The ‘complete’ myth.” Petfood Industry, September/October 1990, 24-28.
[Wysong, R. L.] Fresh and Whole: Getting Involved in Your Pet’s Diet. Midland: Wysong Corporation, 1990.
Wysong, R. L. Rationale for Animal Nutrition. Midland: Inquiry Press, 1993.
- Pet Food Institute, 2.
- Morris, 2520S.
- Corbin, 81.
- Cargill, 36.
- The conversion is: ingredient percentage divided by (100 minus moisture percentage).
- Official Publication, Regulation PE3, 114-115.
- Wysong, Rationale, 40-41.
- Strombeck, 50-52.
- Smith, 1397.
I quite often recommend keeping dogs busy to prevent destructive behaviors such as chewing, digging, and excessive barking. One of the best things I’ve ever seen was a homemade food dispenser made of two-liter bottles suspended on a dowel rod. The dog has to spin the bottles to make the food fall out. I love […]
A couple of weeks ago, I posted about our recent family room redesign. And while it’s only been finished for a couple of months and we’re still basking in it, it’s made me realize how much the majority of the other spaces in our home could use a sprucing up too. Aside from the big (like, very big) remodeling project we know we need to get to but have been avoiding (oh hey, kitchen), along with the upstairs bathrooms, there isn’t any thing major (other than some areas like our weird yellow hallways) that needs to be changed. But a few pieces of pretty decor can really change the look of a room, and I’ve got the pieces above on my mind. They’re all really lovely, and affordable too; every piece is under $ 25.
Anybody else feeling the need for some simple refreshes with springtime around the corner?
It’s been a while since I’ve just stopped in here to say hi. So hi! You may have seen the above photo on my Instagram of my poor little sickie sleeping off the flu earlier this week. It only lasted about three days, but man was she sick. It was bad. I’ll admit that compared to past years, this winter hasn’t hit us that hard in terms of illness (for example, for the first winter in their lives, neither kids has ended up in the ER or urgent care by now, which feels like a major win), but the kids have had several bouts of illness since November and it’s starting to get a little old. Just like everyone else, we are really ready for a break in the cold weather and sicknesses, and looking so forward to spring.
We’ve also got a few other things we’re really looking forward to, like Robbie having next week off from tour (he has barely been home since the beginning of the year which is rough, but makes us really appreciate the time he does have here), Daylight Savings this weekend (I know a lot of people dread this, but that one lost hour is so worth the sun setting later for me), the official first day of spring in less than two weeks, Robbie’s birthday (he’ll be on the road but we’ll still be celebrating!), and a trip to Arizona in a few weeks. Even in the times we’re struggling (which I do, and badly, in the winter), it helps to focus on the good, at least for me. (Check out this quote for a reminder of how good we might have it!)
I’d love to hear how all of you are doing, what you’re up to, and what you’re looking forward to as well! I get lots of comments on my Instagram photos, but not as many here. I’d love to talk more to you guys on this platform as well. Happy Friday!
Spring is just around the corner, and that means that the boys of summer will soon be back on the playing field! Many major league teams host special dog-themed games during the season, so be sure to…
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