Gr 4-6 In this superb companion to Koko's Kitten (Scholastic, 1985), readers are treated to more wonderful color photos highlighting the young gorilla's life and her incredible relationship with Dr. Penny Patterson, who is teaching her to communicate through American Sign Language. This book expands Koko's story, revealing what she was like as a very young gorilla, learning her first signs, using her first word (food), and being as excited as Penny when she did so. Michael, the young male intended to be Koko's mate when they mature, is introduced, and is given Koko's second kitten, Lipstick, who preferred him to Koko. (Koko was given a third kitten whom she named Smoke.) Koko is shown acting jealous, mischievous, naughty, and even telling lies. More and more, readers will feel that inside this glossy animal body is a gentle, intelligent, fun-loving mind that has learned a way to speak to all of us. An engaging, empathy-building book.Patricia Manning, Eastchester Public Library, N.Y.