Royal Canin Kitten 36 cat food for kittens from the 4 to 12 months old, as well as pregnant or nursing cats. Kibble designed for the permanent teeth of young cats starting at 4 months old. Highly nutritious cat food, Royal Canin Kitten 36 is ideal for mother cats while pregnant or nursing as wells as kittens from 4 to 12 months old. Both have a increased requirements for energy, protein, minerals, trace elements, and vitamins. Royal Canin Kitten 36 is specially developed with these requirements in mind.