If You Were Born a Kitten by Marion Dane Bauer
A lovely picture book that introduces the birthing process to very young children. The book describes how a number of baby animals are born and/or hatched into the world, including a kitten, a whale, and a chick. The last entry describes how a human baby is born. Beautiful illustrations of newborn animals and their parents and a simple description of birth that is not too graphic for young children. The text is rhythmic and soothing and, combined with the illustrations, creates a gentle mood.