What is the current population of the White Cheeked Spider Monkey?

There may be as few as 250 brown-headed spider monkeys left in the wild, according to the Rainforest Trust.Their bite can prove deadly because it can cause anaphylactic shock in humans, killing them. Researchers think the new species, NyAlthough spider monkeys seem harmless -- even adorable -- at first, wildlife experts say the 3-foot-tall primates often become violent toward humans who try to domesticate them. If kept isolated in captivity, the monkeys develop mental problems that cause them to bite, choke and maim people.cticebus kayan, went undiscovered for so long because it is nocturnal.

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