For the record, raw diets do not contain too much protein. Raw animal products contain the ideal amount of protein to nourish our carnivore companions.
According to the USDA nutrient database:
A whole raw broiler chicken is 15.5% protein
Raw chicken liver is 15% protein
A whole raw turkey is 22% protein
A beef shank is 21% protein
Raw beef liver is 20% protein
Raw beef tripe is 12% protein
A whole raw egg is 12% protein
Keep in mind that the USDA nutrient database does not include the nutrients contained within the bone content because humans aren't generally eating bones.
Author - Jennifer Lee
BUY THE BOOK!