This video captures the playful side of these two red foxes. They wrestle and bite each other like two puppies playing. Truth be told, this behavior is just as much training to hunt as it is a game. Foxes are some of the smartest and most adaptable animals. According to National Geographic, they have been known to live in grasslands, forests, deserts, and cities. Foxes have even adapted to farm life or more urban settings. They feed on anything they can find. In the wilderness, they dine on small game like rodents and birds. In a more suburban environment, they eat trash or even pet food.