Chimpanzees launch the wildest fashion trend of 2025: Grass accessories!

In Zambia, chimpanzees display a unique behavior. They are using grass as fashion accessories. This trend started in 2010 with a female chimp named Julie. Other chimps imitated her style. A separate group adopted the trend in 2023. They placed grass in their rectums. Researchers believe this is a form of social signaling. It shows creativity and community among chimps.