Knowing that cats need meat protein to survive, Fussie Cat developed formulas that they call Physiologically Correct. As true carnivores, their bodies are extremely efficient in processing meat, so 20% of their diet should come from animal proteins. Fussie Cat?s foods start with meat, are low in carbs and include a complete spectrum of essential vitamins and minerals. You can be sure your kitty?s getting all the necessary amino acids, protein and other nutrients.