While it's challenging to attribute human-like emotions and intentions to animals, platypuses do exhibit playful behaviors at times, especially young platypuses. Play is a common behavior among many animals, particularly during their early stages of life, as it helps them develop physical and social skills. Platypus play can include activities such as chasing each other, splashing in the water, and interacting with objects in their environment.
Play can serve several purposes, such as honing hunting and survival skills, social bonding, and simply having fun. While platypuses may not play to the same extent as some other animals, there is evidence to suggest that they engage in playful behavior, particularly when they are young and learning about their surroundings.