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"We just seldom see the so called inevitable diseases in our patients, when we can get the owners to raise their pets on their natural foods."
Marty Goldstein, DVM;
Robert Goldstein, VMD;
H. Robertson, DVM;
Richard J. Kearns, DVM
Calgary Based Locally Owned and Operated Pet Stores
The Best and Worst Pet Foods
Ranked from Best to Disastrous
Dr. Karen Becker, DVM
Food Can Either Heal or Harm
As a proactive veterinarian interested in sustaining the natural good health of my pet patients, I always encourage pet owners to evaluate their animal's diet, because food is the foundation upon which good or ill health is built.
It's important to understand that food has the ability to heal or harm your pet, depending on the type and quality of nutrition you provide.
The first factor you should evaluate is the species-appropriateness of what your dog or cat is eating.
A species-appropriate diet contains lots of good quality protein as well as moisture. The protein is necessary because both dogs and cats are carnivores.
High moisture content is required in order to prevent organ dysfunction, including kidney failure. Dogs and cats are designed to eat food that is about 70 percent moisture, which is what a diet of mice and rabbits would provide if your pet hunted his own food.
If you feed your pet dry food only, he's getting only about 12 percent moisture instead of the 70 percent his body demands. This is especially unhealthy for cats, because they don't supplement their moisture intake by drinking large amounts of water like dogs do.
Pets on dry food diets (kibble or pelleted) live in a state of chronic, mild dehydration that over time can cause significant stress to their organs.
Species-appropriate nutrition does not contain much starch, also known as grains or carbohydrates. Corn, wheat, rice and soy are found in most commercial processed pet foods, but your dog or cat has no biological need for them.
I recommend you follow the laws of nature when it comes to your pet's diet, which is to feed everything his body needs and eliminate ingredients that provide no nourishment.
In addition to the species-appropriateness of your pet's diet, it also needs to be balanced. By balanced I mean food that contains all the vitamins, minerals and other nutrients your dog or cat needs.
This isn't something you can guess at – it should be guaranteed through testing.
Nutritional balance is vitally important because deficiencies will develop much faster in your dog or cat than they will in you. A poorly nourished puppy or kitten can end up with obvious signs of skeletal problems and organ degeneration before she's six months old.
An older animal can develop life-threatening organ degeneration, among many other not-so-obvious symptoms, over a one to three year period of eating an unbalanced, nutrient-deficient diet.
The List of Best-to-Worst Foods
A balanced, raw, homemade diet is the best food you can feed your dog or cat. It will be nutritionally balanced because you're following recipes like those found in the cookbook I co-authored, Real Food for Healthy Dogs and Cats.
Raw means the food is unadulterated and still contains all the enzymes and nutrients that are typically destroyed during cooking or other types of processing.
Homemade is the best option because you are in complete control of the quality of ingredients in your pet's diet.
I recommend pets get plenty of nutritional variety, and another great thing about serving homemade is you can buy seasonal fruits and veggies on sale, as well as protein sources (meats), and use them in rotation.
The next best thing you can feed your pet is a commercially available raw diet. This is a raw food diet that someone else has done the heavy lifting to prepare.
It's important that the diet is balanced, and you should be aware that there are raw food pet diets entering the market that are not yet proven to be nutritionally complete. These foods often say "For supplementation or intermittent feeding" on the label.
You'll know if the raw food you've selected is balanced because it will say it right on the packaging: "This food has been proven to be nutritionally complete or adequate for all life stages."
At the present time, these diets are found only in the freezer section of small/privately owned or upscale pet boutiques – not in the big box pet stores. You can also find a selection online.
Cooked, balanced homemade diet. It's the same diet found in number 1, above, except that it's cooked. This means some of the nutrient composition has been diminished through processing.
Human-grade canned food. If the label doesn't say the ingredients are human grade, they're not. Pet food made with human-grade ingredients is also a great deal more expensive, so that's another way to tell what you're getting.
This type of diet is the most expensive you can feed your pet. What I tell my clients is, "If you have more money than time, you can purchase human-grade canned food for your dog or cat. But if you have more time than money, I recommend you make a balanced, homemade diet right in your own kitchen for a fraction of the cost."
Human-grade dry food. As I discussed earlier, dry food is not as species-appropriate as a moisture-dense diet. Human grade is very important because the food is approved, in theory, for human consumption, which means it doesn't contain low quality rendered by-products.
Super premium canned food which can be found at big box pet supply stores like Petco and PetSmart.
Super premium dry food.
Veterinary-recommended canned food. Vet recommended canned foods are purchased at your vet's office or clinic. Typical brands are Science Diet, the Purina veterinary lines, Royal Canin and Waltham.
Veterinary-recommended dry food.
Grocery store brand canned food.
Grocery store brand dry food.
Semi-most pouched food.
The reason this type of pet food is so far down the list is because in order for the food to remain "semi-moist," an ingredient called propylene glycol is added. This is a scary preservative that is a second cousin to ethylene glycol, which is antifreeze. And while propylene glycol is approved for use in pet foods, it is unhealthy for dogs and cats. I do not recommend feeding any food that contains this additive.
Dead last on the list and the worst thing you can feed your pet is an unbalanced, homemade diet – raw or cooked. I'm seeing an increasing number of misguided pet owners in my practice who think they're doing the right thing by serving their pet, say, a chicken breast and some veggies and calling it a day.
Yes, the food is homemade, but it's nutritionally unbalanced. Pets being fed this way are showing up at my clinic with endocrine abnormalities, skeletal issues and organ degeneration as a result of deficiencies in calcium, trace minerals and omega fatty acids.
From Worst to Best in a Heartbeat
For those of you who now know you're feeding your pet an unbalanced, homemade diet, there's an extremely quick and easy way to soar to the top of the list.
All you need to do is add ingredients to balance out the nutrition in the diet you're already serving your dog or cat. This is a fast, simple fix you can apply to turn an unbalanced homemade diet into a balanced one.
So there you have it – the entire list of my recommendations for best-to-worst pet diets.
If you've discovered your pet's food is on the lower half of the list, set a goal to work your way up the list.
If you're already at the top end of the list, congratulations! You're doing the best thing possible by providing species-appropriate nutrition for the animals in your care.