According to a 2011 presentation in The British Journal of
Nutrition («Estimation of the dietary nutrient
profile of free - roaming feral cats: possible implications for
nutrition of domestic cats,» by Esther A. Plantinga, Guido Bosch, and Wouter H. Hendriks, «The results show that feral cats are obligatory carnivores, with their
daily energy intake from crude protein being 52 %, from crude fat 46 % and from N - free extract only 2 %.»