ORIGINAL: ron2
Dogs are domesticated wolves, but still wolves
And dogs are omnivores. And so are wolves. Whether they are the same species or not. It's a proven, observable scientific fact that omnivorous behavior exists in both.
Hmm..if that is the definition of omnivore that there probably are no carnivorous mammalian species existing on the planet earth. All meat-eating mammals consume some sort of vegetable matter, whether it is the stomach contents of their prey, or occasional supplementation of their prey with some vegetetative matter.
The only real way to tell whether an animal is a carniovore, omnivore or herbavore is by looking at the teeth and digetstive system. Human beings and other primates are classic examles of an omnivorous anatomy and physiolgy, horses and squirrels are classic herbivores, and an example of classic predatory carnivore structure would be, you guessed it, canids and felids, both wild and domestic.
Those species that do supplement their diest with plant matter have evolved to do so because out in the wild there is no guarantee that prey will be available - hunting is tough business! It's unpredictable and not to mention dangerous for the predator. Eating fruits and other plant matter allows the animal to get some calories and nutrients when huting times are tough.
All species have evolved a physiological structure to adapt to their environment and what resources available - wouldn't it be useless and for an omnivore to have a carnivorous structure? Such a creature would consider to be unfit for its environment and eventually go extinct.
In my opinion, dogs, just like wolves, do need
some vegetable matter in their diets for optimum health. I do not believe in meat and bone only diets.