Chimpanzees accessorise and follow fashion trends just like humans, scientists find - Eight rescue chimps were observed copying each other placing blades of grass and twigs behind their ears

A team of researchers from Utrecht University, Durham University, and other institutions have observed something remarkable at a chimpanzee sanctuary in Zambia. Several chimpanzees from one particular group were seen dangling blades of grass from their ear holes or their behinds,

A chimpanzee named Juma turned out to be quite the trendsetter. He picked up a blade of grass and stuck it in his ear, a trend that was followed by several other chimps. Then, days later, he stuck another blade into his rectum. This too caught on among members in his group.