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Can A Rottweiler And A Chihuahua Mate?

Rottweiler and chihuahua

There are typically three reasons why people want to know if a Rottweiler and a Chihuahua can mate.

The first is curiosity about the logistics of it. These two dog breeds are wildly different in size, so would it even be possible?

The second reason is that the owner is presented with a situation where the cross-mating can or may have accidentally happened.

The third reason is that people are trying to mate these two dog breeds purposefully.

So, let’s look at the can’s and should’s of cross-breeding a large dog breed with a small dog breed.

A Rottweiler and a Chihuahua should not be bred. A male Rottweiler mating with a female Chihuahua is physically improbable. If successful, copulation, pregnancy, or labor would likely be fatal to the female. A male Chihuahua could mate with a female Rottweiler, but it would be difficult and dangerous.

A male Rottweiler is 24-27 inches tall and weighs between 95 and 135 pounds. A female Rottweiler is 22-25 inches tall and weighs between 80 and 100 pounds. A Chihuahua is 5-8 inches tall and weighs less than 6 pounds.

This should already give you an indication of all the potential problems and impossibilities attached to this question.

This article will look at the issues involved in mating a male Rottweiler to a female Chihuahua and vice versa. We will also discuss what to do if an accidental mating has (somehow) occurred.

Can A Male Rottweiler Mate With A Female Chihuahua?

Risks Involved In The Pre-Copulation Stage

It is uncertain how much interest in a female Chihuahua a male Rottweiler will show, even if the female is in estrus. There is a good chance that nature will intervene to prevent a potentially fatal pairing.

The height difference makes it almost impossible for the female dog’s rear end to get high enough for the male’s penis to line up correctly.

The weight difference makes it exceedingly possible for the 100-pound Rottweiler male to crush the under 6-pound Chihuahua female while attempting to mount (again, the height difference makes this so improbable).

Risks Involved During Copulation

When it comes to the actual act of mating, there is a question of whether or not a Rottweiler’s penis will even fit into a Chihuahua’s vagina.

There has been no research on this (perhaps scientists assume that logic will prevail), but there’s a high chance that the answer is no.

If the answer is yes, it will definitely involve great difficulty and pain on the part of both dogs.

Furthermore, a dog’s penis enters the vagina flaccid (smaller). Once inside, it swells and locks into the vagina as a result of the swollen bulbus glandis at the base of the penis.

The post-penetration erection and locking (called tying) is a natural part of canine copulation.

In the case of a male Rottweiler and a female Chihuahua, it can cause vaginal and other internal rupturing within the Chihuahua, leading to extreme pain, extensive hemorrhaging, and death.

Risks Involved With Pregnancy And Delivery

If the mating was successful, and the Chihuahua fell pregnant, it would introduce further complications. The Chihuahua would be pregnant with puppies containing half the genes of a large breed dog.

The puppies could grow so large that they endanger the female’s life during the pregnancy. They would have to be delivered via a cesarian section because natural birth would probably result in her death.

The puppies would also be more at risk in utero, and if they grow too quickly, premature labor can result in puppies who are severely under-developed being born.

Risks To The Puppies After Birth

If any puppies survived the delivery, there is a good chance that they will suffer from medical conditions.

They may not have all the necessary genes to support growth into a large dog, or they may be physically disproportionate, putting pressure on internal organs and joints.

Should A Male Rottweiler Be Bred With A Female Chihuahua?

Rottweiler and Chihuahua

Breeding a male Rottweiler to a female Chihuahua is incredibly dangerous and highly unethical.

You should take steps to prevent it from happening accidentally, and you should never encourage or force it to happen on purpose.

Do You Suspect An Accidental Mating Between A Male Rottweiler And A Female Chihuahua?

If an accidental mating has somehow occurred between a male Rottweiler and a female Chihuahua, then you should take the Chihuahua to the veterinarian immediately.

The veterinarian may recommend terminating the pregnancy if it is confirmed.

If you cannot or decide not to terminate the pregnancy, the Chihuahua will have to be carefully and closely monitored throughout the pregnancy. You will also need to be ready to pay for a cesarian section.

Sometimes, if there are more puppies in the litter, it is better because they will not have the space to grow as large as would one or two puppies in the womb. A veterinarian can do an X-ray at about two months gestation to confirm how many puppies there are.

If the veterinarian feels that the puppies are too large, then you can pre-plan for a cesarian section.

Even though the logistics of it seem impossible, you should never take the risk of an unplanned pregnancy. If you have both an unneutered Rottweiler and an un-spayed Chihuahua, you will have to keep them separated.

It is also more advisable to sterilize one or both of them, thus preventing the chance of pregnancy altogether.

Can A Male Chihuahua Mate With A Female Rottweiler?

Risks Involved In The Pre-Copulation Stage

A male Chihuahua may be interested in a female Rottweiler in estrus. If the female is willing to stand for the Chihuahua, and the Chihuahua manages to climb onto her back and shimmy into position, then copulation could take place.

However, the male dog could strain or otherwise hurt himself while trying to mount the female.

Risks Involved During Copulation

As mentioned previously, the male dog’s penis swells up inside the female’s vagina, which also contracts to secure the copulatory tie further. Dogs can tie for anywhere from five minutes to one hour.

Unless the male dog has found a platform to stand on during copulation, he will be holding onto the female’s back with his back legs hanging in the air.

If he falls off while tied, this can do severe damage to his reproductive organs. The female may also try to walk away while the tie is in place, and the male Chihuahua will be dragged along by his penis.  

The female is also at risk of reproductive tract injury if the tied penis is pulled by the male’s hanging weight.

Should A Male Chihuahua Be Bred With A Female Rottweiler?

Breeding a male Chihuahua to a female Rottweiler is dangerous and unethical. You should take steps to prevent it from happening accidentally, and you should never encourage or force it to happen on purpose.

Do You Suspect An Accidental Mating Between A Male Chihuahua And A Female Rottweiler?

The dangers involved in this mating occur before and during copulation. If you think it has already happened, the riskiest part is over.

In this instance, you should take both dogs to the veterinarian to be checked for reproductive tract injury, even if there aren’t any apparent signs of damage.

If you find the dogs while they are tied, you need to hold the male up and keep the female still until they separate. You must never try to force a tie separation.

Final Thoughts

Physically, it is improbable that a male Rottweiler can mate with a female Chihuahua.

It is more than likely to be difficult, traumatic for both dogs, and extremely dangerous to the female if it does occur. This does not just apply to the act of copulation.

A small dog who has been impregnated by a large dog will carry large puppies. Pregnancy and labor can result in the female’s death and the death of the puppies.

A mating between a male Chihuahua and a female Rottweiler is more physically possible. However, there is still the potential for harm to the Chihuahua.

When tied, the male can fall off or be dragged around by the female and seriously injure its penis.

There is no legitimate reason to breed a Rottweiler and a Chihuahua together. The offspring will not be more genetically sound or better adapted for a particular and necessary function.

If you think the puppies will be cute, you also have to understand that they may look disfigured because of the vastly different physical characteristics and sizes.

To allow these two dogs to mate is irresponsible. To purposely breed them is unethical.