A healthier protein percentage for spayed or neutered house rabbits is approximately 12-14%, a level at which it is possible to find pellet brands that contain no animal fat and list at least some actual ingredients on their labels./2 cup daily. 11-15 lb of body wt. 3/4 cup daily. There is evidence that small breeds (under 2 lbs) may require a diet higher in energy and lower in fiber than the larger breeds (Cheeke 1987, 324).