Image: Sylvain Gatti
All images used with the permission of their photographers
Most people are aware that animals groom themselves, and monkeys, as well as other primates, are particularly well known for grooming each another – an activity known as social grooming or allo-grooming. Yet what to make of those monkeys that groom totally different species? We’ve got a wonderful collection of images and videos showing this unusual – and pretty cute – behavior.