Nutritionist said "Oops yes I misread the post but the answer still applies. Single source diets like all beef or all venison do not provide the correct amounts and rations of essential oils to ensure a good diet. If you read pet food labels they often contiain a mix, Potential oils/fat are canola, sunflower, poulty fat, mixed fish oil or salmon oil, flax oil, soya oil or safflower. Higher end commercial foods use a blend to bring all the different components into line.
There is a common misconception that meat is the first and critical part of a canine diet. There is a critical need for vegetable based ingredients and associated vitamins and minerals not provided by straight beefor venison or pork etc.
In the wild, if a wolf ( everyones favorite wild animal to compare to their 4 pound dog) kills a deer guess what the first thing is they eat. Nope not the hind end meat! They tear open the carcase and open the stomach and intestines and eat the guts and partially fermented/digested intestinal fill. This is how they get their B vitamins and other nutrients they need to survive. While they are carnivores, they do eat the vegatable based gut contents to get what an all meat diet cannot provide.
So unless you are feeding a dog vitamin/trace mineral mix and possibly an additional fat or oil along with the meat, their diet will be deficient in certain nutritients. "
That brings up an interesting question!!
Dogs are not obligate carnivores (unlike cats), but from what I understand they're facultative carnivores (vs. omnivore, which again is a bit different) and lack a few key enzymes from us, specifically amylase which helps break down carbohydrates.
It occurs to me that they probably eat the intestines and their partially digested contents because that's the only way they can obtain the full nutrition from that plant matter. So what about commercial dog food, or even raw diets for that matter?
Kibble would have the carbohydrates partially broken down by manufacturing process, but raw diets, by design, would not. Nor would home made raw diets. I wonder if the animal would even be able to extract adequate nutrition from non-meat food in those diets?
Something to wonder about!!