Available 3 ways: 1) by itself 2) with the KoKo Doll in the package or 3) inside the book for the parent (see above) KoKo, an irresistible little unisex bear le

This unisex doll and read-aloud story shows children that toilet training is only a part of the larger process of growing up. The book warmly conveys the family

A personal, scientific account of the ground-breaking Project Koko discusses Patterson's controversial experimental program of teaching sign language to an ape.