Uakaris only live in tropical rainforests that are flooded or filled with many slow flowing streams, and consequently they are very rare. They are active during the day, running on all fours through the tops of large trees. They mainly feed on fruit, but will also eat leaves, insects and small vertebrates. Although they are quite agile, Uakaris live in large troops of 10-30 individuals. In areas where forests have not been damaged by human activity, groups of over 100 have been reported. Uakari troops often get mived in with those of other monkeys, such as squirrel monkeys, during daytime feeding forays.

Each troop has a hierarchial structure, which is maintained by fighting among both sexes. The dominant males control access to females in a troop during the breeding seasons. Females give birth to single young every two years.

Habitat: Beside rivers in flooded forests.

Food: Fruits, leaves and insects.

Life Span: 20 Years

Status: Endangered

Breeding: Single young born in summer every 2 years