I was just wondering if this is true or if it just the shelter trying to get people to adopt.
"Problems associated with Purebred Dogs Looks that Kill Purebred dogs are, in general, less physically and emotionally fit than mixed breeds. The majority of purebreds suffer from some inherited physical defect. Dalmatians, for example, are prone to deafness, poodles to epilepsy, boxers to malignant tumors, and Doberman pinschers to a bleeding disorder resembling hemophilia. Eye diseases plague purebreds - including cataract, glaucoma, and retinal degeneration that ends in blindness. Among thousands of dogs in a study by the University of Pennsylvania School of Veterinary Medicine, congenital heart disease afflicted purebreds at nearly 3 1/2 times the rate in mixed breeds. According to Dr. George Padgett of Michigan State University's College of Veterinary Medicine, each breed of purebred dog harbors, on average, over a dozen genetic defects.
Purebred dogs are also more vulnerable than mixed breeds to inherited behavioral and emotional disorders. Chihuahuas, Yorkshire terriers, and other toy dogs are frequently high strung and hyperactive. Many mastiffs, Dobermans, and German shepherds are overly fearful. Some breeds, such as the Rottweiler, sharpei, and Chow Chow, have a reputation for inherited aggression; others, including the cocker spaniel and golden retriever, are acquiring this reputation."
Ditto to what Mafia said. If a breeder of purebreds researches the lines and genetics very thoroughly and breeds only genetically sound dogs there should be no problems...hmmm, isn't that what Mafia just said? I should have just stopped at the Ditto, but I guess it's worth repeating :o)
"Bad things happen to good people/canines"... paraphrasing..Sorry. Every day can be a role of the dice. Hate those random genetic mutations. How has Keith Richards lived as long as he has? Live smart, think smart, play smart, breed smart and don't play with the house's money.
"Purebred dogs are, in general, less physically and emotionally fit than mixed breeds. The majority of purebreds suffer from some inherited physical defect. Dalmatians, for example, are prone to deafness, poodles to epilepsy, boxers to malignant tumors, and Doberman pinschers to a bleeding disorder resembling hemophilia. Eye diseases plague purebreds - including cataract, glaucoma, and retinal degeneration that ends in blindness. Among thousands of dogs in a study by the University of Pennsylvania School of Veterinary Medicine, congenital heart disease afflicted purebreds at nearly 3 1/2 times the rate in mixed breeds. According to Dr. George Padgett of Michigan State University's College of Veterinary Medicine, each breed of purebred dog harbors, on average, over a dozen genetic defects" -CheerLover
Oh good grief! As someone mentioned already, it's genetics.
If a purebred is plagued with disease that's due to the puppymillers and backayrd breeders who like throwing any two dogs together without regard to temperment and health. they are the MAIN REASON why so many purebreds are plagued with disease.
A well bred purebred from a REPUTABLE breeder can still fall ill BUT there's a much lesser chance that it will as opposed to puppymill and backayrd breeder dogs.
"Chihuahuas, Yorkshire terriers, and other toy dogs are frequently high strung and hyperactive." -CheerLover
When you breed a purebred anything, dog/cat/horse/cow/pig/plant you bring out recessive trates. This has a positive and a negitive.
A recessive must be paid up with another recessive to create the actual atribute, good or bad.
When you mix breeds you shatter the combination of recessive trates.
However you can also unwittinly link some together that where not paired up before.
When you breed a purebred animal it is your responsibility to know the positives and negitives, the recessives and dominates so that when you breed you can combine the correct trates.
One must know their dog, their breed, and their pedagrees. Some lines do NOT work together. One purebred should not just be bred to another one. It is not that simple by any means.
Now, there is no such thing as hybred vigor. A mule is a hybred, a cock-a-peek-a-pom-a-poo is a dog as is a German Shepherd. You can breed your poodle of my GSD and we may not get poodle or GSD problems, or we may, or we may get some horrible auto immune crash.
You see, each purebred is a compost of recessives carefully pulled out, cultivated, and bred for. It takes a long time to do this and a lot of mistakes. This is why some rare colors are bad, they carry undiserable trates, like color dilution alopecia.
Okay, so if breeding purebreeds can make bad things why do it? How horrible?
No not really, because they can bring out as many positives as negitives. You can isolate genetics and then cut them from the bloodline.
Breeding is not a sweet warm cuddly venture that produces lovely cute wonderful puppies. It is a soul deep responsibility that impacts you, the buyer, and the little lives you bring into the world. I can not comprehend how one is not weighted down by the sheer enormity of the responsibility.
to the origianl post. The problem with this line of thinking is this--purebreds have much more testing and published results about problems because good breeders are testing to avoid the problems in future generations. Mixed breeds and shelter dogs have little or no testing, so it is ASSUMED (and wrongly) that mixed breeds are healthier. Until mixed breeds are tested as often and for the same things as many purebreeds, than the origianl statement must be taken as inaccurate.
I happened to see the full article today where this probably came from. They go in to much more details to support their claims. I must admit, it makes a lot of sense after reading it all. Saying puppy mills are responsible is not completely accurate. Apparently, many of the faults in pure breeds are the direct result of the very same dedicate responsible breeders that helped developed the breeds.
It is long, but read it for your self. It is very interesting.
Hmmm. Well, the kicker is, if you read the article, not so much that the problems are of purebred dogs, but of dogs with certain traits. Like really big dogs or teeny tiny dogs - Say I wanted a huge gigantic dog, and adopted a mixed breed gigantic dog- it is predispositioned to the same hip dysplasia, and the same heat disbursion problems of purebred dogs. Problem is, with a mix, nobody bothered to send xrays to OFA to see if the hips are exellent, or poor, or whatever. So I now have no idea what sort of risk this particular dog has.
Same goes for tiny dogs, if I wanted a tiny dog, and adopted a mixed tiny dog- they are ALL suseptible to tiny dog problems, like luxating kneecaps- an issue of size, not necessarily breeding.
And I am saying this as someone who has had both mixed dogs and purebred, show-breeding dogs- my purebreds are healthier. Their vet visits have been far fewer than the mixes. Largely this is because in a breed, you know what health issues a dog can be likely to have, and you can test for it. My dogs are VWB (bleeding disorder) clear. They are CERF normal-eyed, as are their parents, hips are checked and passed and so on. So I KNOW what they might get, and have checked for it, and it isn't there. They are healthy. You can't do this with a mutt. You don't know how the dice rolled, you don't know what the dog is susseptible to, you can't test for it.
Some mixes are healthy. Some are NOT. Making blanket statements is not helpful. That is like saying all people with blue eyes see well at night, and people with brown eyes see better in the noonday sun- might be true sometimes, and untrue sometimes.