Examines the physical characteristics, habits, and natural environment of the gorilla, and describes the efforts being made to ensure its survival as a species.
This book examines different kinds of whales and other cetaceans, such as dolphins and porpoises, discussing their characteristics and current status as endangered animals.
Considers the possibility that the world's jungles may still hold large unknown wild animals that have never been captured, such as a living dinosaur, a pygmy hippo, a giant forest hog, and a snake larger than the anaconda.