But they are largely gentle and eat only leaves and shoots. Mountain gorillas are very rare and live only in scattered areas throughout central Africa. Chimpanzees remind us of ourselves with their sense of fun and expressive faces. They live in African forest and grassland. Although they sleep in crude nests in the trees, they spend most of their lives on the ground, walking on all fours.
Baboons live on the ground and run on all fours like a dog.
A single pair of rabbits could produce a family of 33 million offspring in 3 years if all the young survived to breed. The aye-aye lemur of Madagascar has fingers like toothpicks which it uses to pick insects out of dead wood. Bushbabies can leap up to 6m between trees. Macaque monkeys in northern Japan have learned to keep warm in winter by bathing in hot volcanic springs. Big ears such as those of elephants and jack rabbits help keep them cool.