Eventually, a bachelor may try to overthrow a harem leader and take over that group himself. Click here to see spectacled langurs on video. Hylobates lar Southeast Asia Gibbons are the acrobats of the rainforest. It's rare for primates to pair off, one female to a male. But gibbons not only choose just one mate, they typically stay together for life.
Youngsters stay with their parents on their home turf till they're five or six years old.
Black and white colobus monkey Colobus guereza East Africa Striking coloration may help neighboring colobus groups see and avoid each other at a distance. When neighboring colobus troops spot each other in the trees, they jump up and down. Their flashing black and white fur sends a vivid long-distance signal. In the forest, colobus monkeys travel the treetops by dashing along one branch and jumping to the next. In fact, troop members often take the same route over and over.