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NancyH, Dog Expert:Rescue, Train,Breed,Care
Category: Dog
Satisfied Customers: 31958
Experience:  30+ yrs dog home vet care & nursing, rescue, behavior&training, responsible show breeding, genetics
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Why do dogs get stuck together after mating Is it to ...

Customer Question

Why do dogs get stuck together after mating? Is it to ensure insemination, or...?
Submitted: 9 years ago.
Category: Dog
Expert:  NancyH replied 9 years ago.
Dogs are very slow at passing sperm so the tie keeps them together for long enough for it to pass.
Male dogs have a special portion of anatomy called the bulbus glandis that swells during mating. Owners sometimes say these almost look like a second set of testicles at the base of the penis when they see them.
The female dog has muscles that clamp over the male behind the bulbus glandis to complete the 'tie' causing the dogs to stay linked during sperm transfer.
Dogs transfer material to the females in three parts. A pre wash, the sperm component, and the post wash and its a slow process. The tie makes sure the female gets the sperm safely on its way to meet up with the eggs for fertilization.
Hope this helps you!