What is a male dog knot?

A male dog knot, also known as a copulatory tie, occurs during mating when the male dog's bulbus glandis swells inside the female's vagina, causing the two dogs to become temporarily stuck together. This is a natural part of the mating process that allows for successful sperm transfer. The tie typically lasts anywhere from a few minutes to half an hour before they can separate. It's important for owners to remain calm during this time, as it is a normal behavior in canine reproduction.