Capuchin Monkey

MIAMI - AUGUST 21: Cher Moody, a research student, holds a millipede at the Monkey Jungle, Inc. August 21, 2002 in Miami, Florida. The capuchin and owl monkeys at the park like to rub the creatures on their fur after biting them, which sends them into a delirious state, said Sian Evans, who heads the DuMond Conservancy, a primate conservation group based at Monkey Jungle. Millipedes defend themselves by secreting a chemical that acts as a natural bug repellent. Scientists believe the monkeys rub the bugs on their fur to ward off mosquitoes. The millipedes' secretions also seems to induce an excited state in the monkeys that lasts up to 30 minutes, kind of like how cats react to catnip. (Photo by Joe Raedle/Getty Images)