Chimpfluencers Stick Grass in Their Ears and Butts in Latest Viral Trend

Summary

If chimpanzees had access to TikTok, the platform might soon be flooded with videos of 'chimpfluencers' wearing grass in their ears and butts – the latest trend going around a chimp sanctuary in Africa.In August 2023, at the Chimfunshi Wildlife Orphanage Trust sanctuary in Zambia, a trendsetting chimp named Juma was seen sticking a piece of grass into his ear, deep enough to stay there on its own. Within a week the fad went viral, as four other chimps in the group started copying his unusual accessory.Not to be outdone, later that month Juma debuted a risqué variation: he inserted a blade of grass into his rectum, and left it dangling. This unorthodox trend also caught on, with five other chimps adopting the strange new fashion.Related: Bored Capuchin Monkeys Are Kidnapping Howler Babies in Weird New 'Trend'The behavior fascinated researchers observing the captive chimpanzees (Pan troglodytes) . The grass didn't seem to serve a biological purpose – they weren't scratching itchy ears or butts, for example. Instead, the team hypothesizes that it might serve a social purpose."By copying someone else's behavior, you show that you notice and maybe even like that individual. So, it might help strengthen social bonds and create a sense of belonging within the group, just like it does in humans," says Edwin van Leeuwen, biologist at Utrecht University in the Netherlands.A chimp showing off its trendy new ear grass. (Jake Brooker/Chimfunshi Wildlife Orphanage Trust)Intriguingly, the event wasn't the first time Chimfunshi chimps had decorated their orifices with grass. An original trendsetter named Julie started the whole grass-in-ear thing way back in 2010, which caught on with seven other chimps. The behavior continues to this day among the group, even after Julie's death.This seems to be a case of social learning and cultural transmission – after all, only one of the four groups observed back then exhibited the behavior, even though all lived in similar conditions. Weirdes...