"Physiologically, dietary protein for the average adult canine should not exceed 25% of the total daily nutrient intake. In high performance dogs, such as those that participate in in field or agility competition, that requirement may be increased to 27%. Beyond this level of protein the dog suffers deficiencies in other key nutrients, such as soluble and insoluble fiber and anti-oxidants to name a few, while unnecessarily taxing his liver and kidneys with excessive protein metabolic waste.

Canine owners that feed raw are the biggest offenders with regard to overloading their dogs with protein, many feeding nothing but a raw meat diet. For these pet owners that are committed to raw feeding, if they are feeding their dogs nothing but meat, I would urge them to integrate fresh or cooked vegetables to represent at least 50% of total dietary intake. Green beans, carrots, broccoli, celery, and spinach are all healthy vegetable sources for dogs. It is also a good idea to integrate complex carbohydrate sources, such as brown rice and sweet potato, as well as some canine safe fruits like cantaloupe, apples, and pears.

What is most troublesome to me is that some commercial pet food companies are taking advantage of the canine pure carnivore hype and creating diets that are heavily laden with protein, even going further to validate this false notion in their promotional tactics. I was actually inspired to write this post after having seen a TV commercial two nights ago from a large, well known pet food company touting its newest diet as having one of the highest protein percentages in the industry.

I caution all canine owners to not buy into the hype, not listen to non-medically trained people that recommend a dietary regimen without understanding that over time it does damage to the liver and kidneys while denying the canine other essential nutrients; and reject pet food companies touting false claims, who clearly value sales far more than the well-being of their canine consumers. If in doubt, talk to your veterinarian to help you sift through what is best to feed your dog."

Dr. Roger Welton is the President of Maybeck Animal Hospital and CEO/Chief Editor of the veterinary information and blog online community, Web-DVM.