Under the current classification system there are two families of hominoids:
- the family Hylobatidae consists of 4 genera and 14 species of gibbon, including the Lar Gibbon and the Siamang, collectively known as the lesser apes.
- the family Hominidae consisting of chimpanzees, gorillas, humans and orangutans collectively known as the great apes.
Except for gorillas and humans, all true apes are agile climbers of trees. They are best described as omnivorous, their diet consisting of fruit, including grass seeds, and in most cases other animals, either hunted or scavenged, along with anything else available and easily digested. They are native to Africa and Asia, although humans have spread to all parts of the world. A group of apes is called a shrewdness.
Most ape species are rare or endangered. The chief threat to most of the endangered species is loss of tropical rainforest habitat, though some populations are further imperiled by hunting for bushmeat.