Oscar, a De Brazza’s monkey, is known for his mischievous personality. One day, during a routine cleaning of his enclosure, he managed to sneak behind a zookeeper and grab their hat. Instead of returning it, Oscar climbed to the highest branch and proudly wore the hat for the rest of the day. Visitors loved his antics, and the photos quickly went viral. To keep him engaged, the zoo introduced various puzzle feeders, which Oscar enthusiastically solves in record time. His playful nature serves as a reminder of the intelligence and curiosity of primates.