why do dogs get stuck after mating

Dogs get stuck after mating because of a natural reproductive mechanism called the "copulatory tie" or "mating tie." During mating, the male dog's penis has a part called the bulbus glandis that swells significantly once inserted into the female's vagina. At the same time, the female's vaginal muscles contract around the swollen bulbus glandis, locking the two dogs together. This tie can last from a few minutes to up to 30-45 minutes. The purpose of this tie is to increase the chance of successful fertilization by preventing the male's penis from being withdrawn too soon and ensuring that sperm is effectively deposited inside the female. After ejaculation, the male often dismounts and turns to face away from the female, yet they remain locked until the swelling subsides and the muscles relax naturally. It is important not to try to separate the dogs forcibly during this time, as it could cause injury to both animals. This process is normal canines behavior seen not only in domestic dogs but also in wolves and foxes, serving as a natural reproductive adaptation.