Dogs have a very keen sense of smell and use it to gather information about their environment, including other dogs they encounter. One way they gather information about other dogs is by sniffing their rear end, where glands located around the anus release pheromones that provide information about the dog’s age, sex, and overall health.
When dogs meet, they often engage in a series of sniffing behaviors to learn more about each other, including sniffing each other’s rear ends. This behavior is a natural and normal way for dogs to gather information about each other, and it’s not considered rude or inappropriate in the dog world. In fact, it’s an important part of their social interaction and communication.
So while it might seem strange or gross to humans, sniffing other dogs’ butts is just one of the ways that dogs communicate and gather information about their surroundings.
