Researchers with the Wildlife Conservation Society’s (WCS) Congo Program and the Nouabalé-Ndoki Foundation found that female putty-nosed monkeys (Cercopithecus nictitans) use males as “hired guns” to defend from predators such as leopards.
Click here for original story, Female monkeys use males as ‘hired guns’ for defense against predators, study says
Source: Phys.org