Hereditary diseases

Is It Bad to Cross Breed Sibling Dogs?

Josie F. Turner
By Josie F. Turner, Journalist specialized in Animal Welfare. January 5, 2017
Is It Bad to Cross Breed Sibling Dogs?

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The idea of having siblings cross breed is not just a bad practice. It is an irresponsible action with unpredictable consequences. However, it happens a lot more than we might think. Professional dog breeders use this resource for various reasons that we will disclose later.

Being an unwise practice, if the person using it is a professional expert who knows what he or she is doing, and ponders all the pros and cons that may arise, then this is an admissible exception.

If you continue reading AnimalWised we will clarify your doubts reagrding: is it bad to breed sibling dogs?

You may also be interested in: Can You Breed Mother and Son Dogs?


  1. What do dog breeders do? How do they work?
  2. Reasons for cross breeding sibling dogs
  3. What happens if sibling dogs are cross bred?
  4. Is inbreeding in dogs bad?

What do dog breeders do? How do they work?

Responsible breeders

As in any human activity, there are professional and responsible professionals, and poor or very bad professionals (if you can call them that). This means that the action of pairing sibling dogs that many professionals use is applied in very different ways in each case.

Breeders apply this dangerous resource to try and fix certain phenotypes or characteristics that are prevalent in a particular canine strain. They do it with measure and always evaluating the global consequences that the action will cause.

However, this type of act can lead to dramatic consequences if the genetic line of both dogs is unknown, causing the appearance of hereditary and congenital diseases. A responsible professional will only carry out this action in very exceptional and specific moments in a single genetic line.

Is It Bad to Cross Breed Sibling Dogs? - What do dog breeders do? How do they work?

Irresponsible breeders

Bad breeders carry out these actions as they please, not caring at all about the collateral damage that the litters may suffer as they grow up. By doing that, they impoverish the dog's genetic background and cause many problems for the poor animal, therefore for its caregivers as well.

The German Shepherd is perhaps the hardest hit breed of dogs when it comes to sibling cross breeding. The malpractice in breeding is usually manifested in a lack of intelligence of the German Shepherd born in this way, and successive diseases during adulthood. Virtually all German Shepherd dogs suffer hip dysplasia upon reaching adult or elderly life.

Is It Bad to Cross Breed Sibling Dogs? -

Reasons for cross breeding sibling dogs

Expert and responsible dog breeders use sibling cross breeding in measured occasions and exceptionally. At the same time they invest real fortunes in males and females from other genetic lines. Thus they reinforce positive genetic diversity in future crosses. Yet despite this and even though it only takes place in very specific occasions, it is not at all recommended to cross breed sibling dogs.

Mediocre breeders do not spend a penny on new specimens to reproduce. The only important thing is that the dogs come out pretty and cheap, so they can sell well. If the dog is sick, aggressive, silly or a weak in character... it is not their problem. They have already collected their dues.

Is It Bad to Cross Breed Sibling Dogs? - Reasons for cross breeding sibling dogs

What happens if sibling dogs are cross bred?

We must forget about making siblings cross at home. It is not a matter of heads or tails, where after throwing a coin if it is heads the puppy dogs comes out well and if tails they come out wrong.

What is normal is that it goes wrong in both cases (heads and tails) and that it goes well only when, after throwing, the coin hits the floor and stays standing... quite unlikely, right?

Is It Bad to Cross Breed Sibling Dogs? - What happens if sibling dogs are cross bred?

Is inbreeding in dogs bad?

Inbreeding is when members of the same family (human or animal), or a very small social group, cross breed. The genetic impoverishment of these crosses very occasionally produces beautiful beings and more commonly aberrant beings.

Inbreeding, sooner rather than later, brings many degenerations among groups that practice it. Pharaonic lineage, royal lineage and some areas of economic, social or religious power have succumbed to this despicable practice.

Nonsense like 'preserving the purity of blood' and 'blue blood' or the accumulation of peerages and economic status so that everything remains 'in the family' have been adverse to the health of those who have practised this. The history is proof of this.

Is It Bad to Cross Breed Sibling Dogs? - Is inbreeding in dogs bad?

This article is purely informative. AnimalWised does not have the authority to prescribe any veterinary treatment or create a diagnosis. We invite you to take your pet to the veterinarian if they are suffering from any condition or pain.

If you want to read similar articles to Is It Bad to Cross Breed Sibling Dogs?, we recommend you visit our Hereditary diseases category.

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1 comment
My dog is a cross between jack Russel and basset hound,the person I purchased it from has never owned a dog before,mated a brother and sister,didn't worm the pups or toilet train them and I'm worried about that,any useful suggestions?
Administrador AnimalWised
Hi Buster,

Just in case anyone is reading this comment, we need to say that mating siblings is never advised. It can lead to serious genetic defects which can greatly inhibit their quality of life. Now that it has happened, there are lots of things to take into consideration. Firstly, it is very important that the puppies stay with the mother until a minimum of 8 weeks. This is not only for feeding purposes, but is an incredibly important part of socialization. If they have been taken away, then you will need to socialize them yourself. It's not always easy, but here is some advice:

Before this however, you will need to take them to the vet. They need vaccinations, deworming, examination for neurological disorders and much more. It is cruel to breed dogs if you don't know what you are doing, but it doesn't mean you can't help these ones have a happy and healthy life. Particularly as they are inbred, ensure they are neutered. It is kinder for these dogs and dogs in general.
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Is It Bad to Cross Breed Sibling Dogs?