Why Do Dogs Get Stuck Together? Understanding Dog Mating Behavior

  • 5 min read
  • Jun 22, 2025

If you’ve ever seen two dogs stuck together after mating, you might be surprised, confused, or even worried. It’s a common question among pet owners, why do dogs get stuck together?

The truth is, this behavior is completely normal and happens during a natural part of the mating process. It may look strange or uncomfortable, but it’s not usually something to panic about.

In this post, we’ll explain what actually happens when dogs get stuck, why it occurs, and whether it’s something you need to worry about. If you’re a new dog owner or simply curious, this guide will help you understand this unusual but natural part of canine behavior.

What Does It Mean When Dogs Get Stuck Together?

When two dogs get stuck together after mating, it’s called a “copulatory tie” or simply a “tie.” This happens during the mating process when the male’s reproductive organ swells inside the female’s body, causing both dogs to become locked together for a short period.

It may look strange or even worrying to someone who hasn’t seen it before, but it’s actually a normal and natural part of how dogs reproduce.

Here’s what’s happening in simple terms:

  • During mating, the male dog enters the female and becomes aroused.
  • A part of his anatomy called the bulbus glandis swells inside the female’s body.
  • This swelling causes the two dogs to become “stuck” or “tied.”
  • The tie helps ensure that sperm is properly transferred to the female.

Is This a Sign of Something Wrong?

Not at all. This is a completely normal part of dog mating and usually lasts anywhere from 5 to 30 minutes. The dogs will often stand back to back during this time, and it’s important not to try to pull them apart.

When dogs get stuck together, it’s a sign that mating has taken place and the tie is part of nature’s way of increasing the chance of pregnancy. It’s not painful for them, and they will separate on their own when the tie is over.

Should You Try to Separate Stuck Dogs?

If you see two dogs stuck together during mating, your first instinct might be to help them separate. But the best thing you can do is not to interfere.

Trying to pull dogs apart while they are stuck can cause serious harm to both dogs, especially to their reproductive organs. It can also create fear, panic, or injury from sudden movement.

Why You Should Never Try to Pull Them Apart:

  • It can cause pain or tearing to the male or female dog.
  • It may lead to infections or long-term injuries.
  • Dogs may become anxious or aggressive due to stress or pain.

What You Should Do Instead:

  • Stay calm and keep your distance. Most dogs will naturally separate on their own in a few minutes.
  • Keep the area quiet to reduce stress or distractions.
  • If the female tries to move or panic, try to gently keep her still until the tie ends.
  • If you’re in public, keep other people or animals away during this time.

Even though it may look uncomfortable, the dogs are not usually in pain. Interfering can make things worse, so let nature take its course and wait for them to separate safely on their own.

Can Dogs Get Pregnant Every Time They Get Stuck?

It’s very possible for a female dog to get pregnant after mating, but getting stuck (the tie) doesn’t always mean pregnancy will happen. The tie increases the chance of successful fertilization, but pregnancy depends on a few key factors:

Factors That Affect Pregnancy

Female’s Fertile Period

Dogs have a specific time in their heat cycle when they are most likely to become pregnant. If the mating happens during this fertile window, the chances of pregnancy are much higher.

Health and Age of Both Dogs

Healthy, mature dogs have a better chance of successful mating.

  • Female dogs are usually most fertile between 2–5 years old
  • Male dogs are typically fertile from around 6 months onward

Sperm Quality and Timing

Even with a tie, if the male’s sperm count is low or the timing is off, pregnancy may not occur.

Is Every Tie a Guarantee of Pregnancy?

Situation Pregnancy Likely?
Tie happens during fertile days Yes, likely
Tie happens outside fertile days Less likely
No tie (but ejaculation happens) Still possible
Tie with health issues present May reduce chance

If you’re trying to breed dogs, tracking the female’s cycle and working with a vet can help increase success. If you’re not trying to breed, it’s important to keep your dogs supervised or separated during heat to prevent unwanted pregnancies.

What to Do If Your Dog Mates Unexpectedly?

If your dog mates with another dog and you weren’t planning for it, don’t panic. Accidental mating can happen quickly especially if a female is in heat. But there are steps you can take to manage the situation responsibly.

Step-by-Step: What to Do Next

1. Stay Calm and Don’t Try to Separate Them

If you catch them in the act and they are stuck together, do not try to pull them apart. Let the tie finish naturally. Forcing them apart can cause serious injury.

2. Separate and Monitor Both Dogs Afterward

Once the dogs have separated:

  • Keep them apart to prevent multiple matings
  • Make sure they’re both calm and not injured
  • Offer water and a quiet space to rest

3. Contact Your Veterinarian

If you’re concerned about a possible pregnancy or your dog’s health:

  • Call your vet within 24 to 48 hours
  • Discuss options, especially if you don’t want puppies

Can Pregnancy Be Prevented?

Yes, but only if acted on quickly. Vets can provide medications to prevent pregnancy after mating, but these must be given soon after the incident usually within the first few days.

Important: These treatments must be done by a vet and may not be suitable for all dogs.

What Not to Do

  • Don’t use home remedies or online tricks to “stop” pregnancy, they are unsafe and ineffective
  • Don’t punish your dog they are just following natural instincts
  • Don’t delay if you’re considering medical prevention, timing matters

How to Avoid It Next Time

  • Keep your female dog indoors and supervised when she’s in heat
  • Consider spaying or neutering your dogs if you don’t plan to breed
  • Use fences, gates, or crates to keep dogs separated

Accidents can happen even to responsible dog owners. The most important thing is to act quickly, talk to your vet, and take steps to prevent it in the future.

Conclusion

Seeing dogs get stuck together can be surprising, especially if you’ve never seen it before. But now you know it’s a completely normal part of the dog mating process. The “tie” may look strange, but it’s how dogs are naturally built to reproduce.

As long as both dogs are healthy and not in distress, there’s usually no need to worry. The best thing to do is stay calm, avoid interfering, and let them separate on their own.

If you’re not planning to breed your dog, it’s important to take steps to prevent unexpected mating. Talk to your vet about spaying or neutering and how to care for your dog during their heat cycle.

Understanding your dog’s behavior helps you be a better and more confident pet owner and that’s always a good thing.

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