How One Monkey's 1953 Idea Spread to Her Whole Troop

How did one monkey's 1953 idea spread to her whole troop? Watch to the end for the payoff — a troop that learns together stays clever together. In 1953 a young macaque named Imo washed sandy sweet potatoes in a stream, and her whole troop copied her. Decades later they still wash their food, capuchins have used stone hammers for about 3,000 years, and a brand-new tool user was caught on camera in 2026. ▶ Subscribe for a new animal fact Short and a new long video every day at 2am. #animalfacts #monkeys #wildlife Chapters: 0:00 How Did One Monkey Change a Troop? 0:18 Who Copied Imo Next? 0:34 Why Do They Still Wash Today? 0:50 Stone Hammers for 3,000 Years? 1:07 How Picky Is a Tool User? 1:25 A Brand-New Tool User in 2026? 1:46 Can Watching Alone Teach a Skill? 2:04 Why Do Troops Have Different Tricks? 2:21 Do Monkey Calls Carry Meanings? 2:39 Faces They Never Forget? 2:55 How Does a Puzzle Solution Spread? 3:13 Why Did the Hug Move Millions?