On a recent day at the Oakland Zoo's animal hospital, across the bay from San Francisco, an endangered Mexican spider monkey leaps onto tree branches, climbs across platforms and swings on ropes in a ...

Violeta is an endangered Mexican spider monkey, about 18 months old, who was poached from the wild and smuggled into California, where it's illegal to keep primates as pets. (Oakland Zoo) On a recent ...

The demand for pet primates in the U.S. fuels a brutal underground market. But a new bill in Congress aims to change that by creating a national ban on privately owning and breeding these animals.

Eventually the property will feature several different enclosures for different types of primates, April Stewart says. An enclosure for the kinkajous is almost finished, according to Stewart, and she ...