Scientific studies to accurately determine the nature of dog health problems due to hereditary disease and congenital disease can be a long process. Below are some examples of common diseases that we know most are inherited, while others are still in research.

Often, specific breeds are susceptible to dog health problems but direct inheritance cannot be shown. For instance, some breeds of dogs are more inclined to have tumors than others. Generally speaking, in the dog, tumor predisposition is a matter of familial or breed tendency.

Cryptorchidism

This is the imperfect descent of the testicles, and is one dog health problem that has been extensively discussed. A few causes have been offered. Predominant inheritance was accepted for a period of time, but today the best theory is that it is a simple recessive characteristic. It was proposed to be sex-linked, but this is highly questionable.

The American Kennel Club dog show regulations claim that testicles have to be normally descended. Therefore, it is unethical for a veterinarian to do surgery or give medicines that will cause a testicle to descend when this is an existing dog health condition for a potential show dog.

Additionally, fixing the physical defect will not change the genetic structure of the dog and the defect will be passed on if the dog is bred. If the testicles cannot descend as they should, they are held at a higher body temperature which consequently is linked to greater dog health problems, leading to testicular tumors. In addition, an unnaturally retained testicle might trigger bowel strangulation.

Umbilical Hernia

Umbilical hernia is an extremely typical dog health issue in some dogs. The Pekingese, for example, has serious issues with this condition. The disease is extremely hard to breed out as it is a recessive characteristic and involves multiple genes. Hence, it can not be removed with a few test breedings.

Disfigurement is the main objection with this dog health problem. Bowel strangulation resulting in death is uncommon. Since this disease is clinically innocent, maybe it will have to be accepted in those breeds demonstrating a high occurrence.

Dermoid Inclusion Cysts

Dermoid inclusion cysts are a typical dog health problem in the small of the back of Rhodesian Ridgebacks. This breed has an abnormal development of the hairline that leads to cyst formation. If Rhodesian Ridgebacks are going to be bred, these cysts cannot be prevented.
















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