Angolan colobus monkeys typically live in a territorial group consisting of a dominant male, several females, and their offspring. Each troop has a well-defined territory that they defend from others. Before entering a new troop, gestures, vocalizations, chasing, fighting, and displays of leaping will likely occur. These mammals typically live among the trees, spending half of their day resting and the other half forging for food. They rarely descend down to the ground. They use branches as trampolines, jumping up and down on them to get liftoff for leaps of up to 50 feet. They swing from branch to branch and it is believed their mantle hair and tails act as a parachute.
The Colobus monkey has a complex stomach that allows them to ingest toxic foliage!