Why puppies smell their butts and where they sit in repeated circles?

Puppies smell each other's butts as a form of social interaction and communication, as this behavior allows them to gather important information about other dogs, such as their identity, health, and reproductive status. Sitting in repeated circles, often referred to as "circular behavior," can be a way for puppies to explore their environment, release pent-up energy, or even indicate excitement or anxiety. Both behaviors are instinctual and help them learn about their surroundings and social dynamics.