The Genetic Connection: A Guide to Health
Problems in Purebred Dogs.
Inherited diseases, for example are a serious
problem in purebred dogs.
Not exact matches
This comes from the idea that the more breeds
in a
dog's genetic mix, the less likely it is that the genetic
problems of
purebreds will manifest themselves.
Some experts believe
in hybrid vigor — the idea that mixed breed
dogs are inherently healthier than
purebred dogs because they have a lower risk for inherited health
problems.
In my
Dog Quest book, I explain the 4 reasons why
purebred dogs have so many health
problems.
All kinds of
dogs —
purebred, crossbred, and mixed — but the risk of health
problems occurring
in a
purebred dog is higher than
in a crossbreed or mixed breed.
Ridgebacks are as prone as all other
dogs to health
problems be they mongrels or
purebred,
in fact sometimes they seem to be too healthy.
They often experience fewer health
problems, such as hip dysplasia, which is all too common
in purebred pups, and breathing
problems that are frequent
in dogs of brachycephalic breeds (those with short snouts, such as Pugs and English Bulldogs).
A: If you're buying a puppy, especially if you're buying a
purebred puppy, check out the health
problems in that breed, and check out that specific
dog's lineage.
For reasons we do not understand, these
problems are most severe
in toy and smaller breeds of
dogs and
in purebred cats.
The
problem is that the initiative appears to be limited to
purebreds, though the crisis created by vicious animals extends far beyond those sacred breeds and the owners most likely to need such encouragement are least likely ever to hear of it.According to the AKC, the test will consist of 10 categories that will show the
dog's acceptance of strange people and strange
dogs and of being handled
in routine ways, such as grooming or petting by unfamiliar people.
Veterinarians are becoming increasingly aware of the
problems associated with trying to visually identify
dog breeds and some have instituted statements similar to the following
in their practices: «Because new scientific evidence has called into question the accuracy of visual breed identification of
dogs, our hospital has adopted a policy to not identify canine patients by predominant breed unless the
dog is
purebred, the predominant breed of the
dog's parents is known, or the
dog's lineage has been established through the use of DNA analysis.»
Behavior
problems, training
problems — these can be found
in any
dog,
purebred or not.
The
problem is that there are so many breeding indiscriminately that we have millions sitting
in shelters waiting to die a slow, agonizing death, including thousands of
purebred dogs who are victims of the breeding industry, which produces many more
dogs than there are owners willing to pay high prices for a
dog.
Consumers looking for a new family pet are willing to pay exorbitant amounts for a
purebred dog because they're told that the puppy has been raised
in a loving environment and will grow up to have a friendly disposition with minimal health
problems.
Unfortunately, too much inbreeding causes serious health and temperament
problems, and we see this issue frequently
in purebred dogs.
However, such a return to the wild is not going to happen, and
in spite of assertions that they are healthier than
purebreds, crossbred and mixed breed
dogs are subject to the same diseases, structural
problems, joint dysplasias, allergies, and genetic abnormalities as their blue - blooded cousins.
In the same way that inbreeding among human populations can increase the frequency of normally rare genes that cause diseases, the selective breeding that created the hundreds of modern
dog breeds has put
purebred dogs at risk for a large number of health
problems, affecting both body and behavior.
Breeds and genetics play a huge role
in problems that may develop
in purebred dogs.
Some people who have grown up
in the «old school» of
purebred dogs, where one is taught to sweep one's genetic
problems under the rug and out of the public eye, will likely be resistant to the notion of broadcasting the names of affected and carrier
dogs.
Again,
in light of recent controversy about certain breed - specific physical traits that allegedly cause hardship for some
purebred dogs, some fanciers are making concentrated efforts to begin rectifying any
problem in their breeds.
The reasons for
purebred dog infertility may also explain the rise
in other health
problems.
Dog breeders report increasing breeding
problems in show - bred
purebreds.
Sadly, kitten and puppy mill «
purebred» cats and
dogs are overbred and are raised under horrific conditions, which results
in stock with major medical and behavioral
problems for which their new owners are not equipped to handle (or simply unwilling to deal with them).
This
problem has been seen
in English springers, Portuguese water
dogs, beagles and huskies as well as kittens — both
purebred and mixed bred
dogs can, on occasion, suffer from this defect.
If we disqualified all of the
dogs with the slightest elbow issue, we would lose 31 % of the breeding population
in every generation, compounding a genepool
problem that is historically present
in purebred dogs, and far more dangerous to the
dogs than any heritable disease.
It is more of a
problem in stocky breeds such as German Shepherds and Golden Retrievers We see it more
in purebred dogs than mutts.
There are not many shared congenital issues, making hereditary
problems less likely than
in many
purebred dogs.
I didn't learn until much later that because of inbreeding and breeding for distorted physical features, approximately one
in four
purebred dogs suffers from serious congenital disorders such as crippling hip dysplasia, blindness, deafness, heart defects, skin
problems and epilepsy.
They don't inbreed their
dogs, which causes many of the health
problems you see
in purebreds.
The inherited conditions of aortic stenosis (a narrowing above the aortic heart valve or the aortic valve itself), atopy / allergic dermatitis (skin allergies), gastric dilatation volvulus (bloat / stomach dilation), early onset cataracts (a clouding of the lens inside the eye), dilated cardiomyopathy (enlargement of the chambers of the heart and thinning of the muscle wall), elbow dysplasia (abnormal growth of tissues that leads to malformation and degeneration of the joint), epilepsy (brain seizures), hypothyroidism (underactive production of thyroid hormones), intervertebral disk disease (
problems with the disks between the vertebrae of the spine leading to neurological
problems), and hepatic portosystemic shunt (an abnormal blood circulation where blood is diverted around the liver rather than into it) are more prevalent
in purebred dogs than
in mixed - breed.