To know the ideal food for our dog, we do not need to do tests, we only have to look at nature. Dogs that live like wolves, eat the same as wolves. But domestic dogs do not live like wolves and that’s why there are small differences in the proportion of fats, proteins and carbohydrates, but not in the ingredients themselves.
The protein source must be meat, not meat meal, egg powder, soy or any other vegetable protein.
The fat must be natural fat, unheated, with the same biological proportion between nutritional fat und unsaturated fat acids — not solidified, heated animal fat mixed with vegetable fat, to obtain an absolute minimum of unsaturated fat acids.
The calcium source must be bone, ground or not, but not bone meal. With bone meal, it becomes unbelievably complicated because the need is different for every individual and not merely a question of age, breed or size.
With ground bones every individual dog, no matter what size or age, uses what it needs and converts the remaining amount into energy. A dog cannot do this with calcium or bone meal.
Also as regards carbohydrates we must look at nature and not only to nature documentaries. These show wolves practically always devouring large preys because of the spectacular images. Nobody is fascinated by a wolf catching mice, but that is what happens in reality.
White wolves living in North-Canada or Alaska do so in the most energy-consuming circumstances. 80 to 90% of their feed consists of rodents such as the lemming. This is an animal that eats 2.5 times its own weight in seeds and corn every day, which means that its stomach content is, in proportion, enormously large. A wolf here eats dozens of such little animals per day to satisfy its need for energy, but its excellent condition shows that when the need for energy increases, this does not increase the need for protein!
We’ve always based the composition of our natural foods on these and other well-established facts and will always do so.