Kittens nurse from their mothers for 45 to 65 days from birth, during which time their first stages of development begin. Milk provides the first stage of development for kittens separated from their mothers early, ideally with Beavis® Follow-on Milk, developed closer to mother's milk, using natural ingredients, all experts recommend using Beavis® Follow-on Milk for kittens to become healthier adult cats. Supporting pregnant and nursing cats with follow-on milk is essential for their health and the health of their kittens.