why do dogs get stuck together

Dogs get stuck together during mating because of a natural phenomenon called the "copulatory tie" or "breeding tie." This occurs when a male dog's bulbus glandis, an erectile tissue at the base of his penis, swells up with blood after he inserts his penis into the female's vagina. At the same time, the female's vaginal muscles contract around this swollen tissue, preventing the male's penis from being withdrawn. This causes the dogs to be physically locked together for a period that can last from 5 to 60 minutes. The purpose of this tie is to keep the dogs connected during and after ejaculation, which helps trap the semen inside the female and increases the chances of successful fertilization. The tie is a normal and important part of canine breeding behavior, and trying to separate stuck dogs can cause serious injury to both animals. They will naturally separate once the swelling reduces and the muscle contractions relax. In summary, dogs get stuck together during mating due to the swelling of the male's bulbus glandis and the female's vaginal muscle contractions, forming a lock that maximizes reproductive success.