I've been thinking a lot recently about the debate raging about purebred dogs. The debate, for those of you who have not been paying attention is largely between the rescue folks who tend to be anti-breeder and anti-purebred dog, and the dog breeder and working dog folks who think mutts are a horror story of genetic unknowns.

For the record, I come at this debate largely from the perspective of the equine world, and I do stand firmly on the side of purebred horses. The reason is that horses, which must perform to have any value, are bred with certain characteristics in mind. A thoroughbred makes a terrible cutting horse, while a showy cart horse looks gorgeous but would be left standing on the race track. Mixing two types of horses, in most cases does nothing to help produce a better horse. Yes, there are exceptions, but the deal with crossing is that while you might think you're adding bottom (stamina) and height to that short coupled and elegant-moving Spanish horse, you might be getting a short, lanky flat-moving outcross - the worst of both worlds.
Having said that, I have also seen the horror show that breeding for the conformation ring begets; quarter horses built like cows, tottering on tiny diseased feet, Arabs with long weak loins that collapse under a rider's weight, are just two examples.
In horses, there is usually a counter current driving the show ring crowd back to sanity - because a horse is a very expensive 'pet', and failure to perform keeps the conformation folks from going completely off the rails. Compare that to the freak dogs that come out of the AKC's idea of beauty; unlike horses, dogs simply have to fail to die. That is not a very high bar.
Horses and dogs both suffer from over breeding, however, horses rarely land in shelters and look pitiful; they quietly go to auction and head down to Mexico. Both scenarios are terribly sad, and neither speaks well for us as humans, however, no one is raving in the streets that people need to adopt horses rather than breeding them.
The first thing we all have to face is that if we want to have dogs in the future, someone needs to breed them. Purebreds come with a host of known faults and genetic abnormalities, mutts provide owners with an element of surprise.
A valid argument could be made that the discussion shouldn't be about mixed-breed vs purebred, rather it should be between well-bred and poorly bred, with the outcome of the latter being a functional, sane, biddable dog with the least amount of genetic maladaptions. Perhaps breeders do gain something when they mix Anatolian shepherds to great Pyrenees, I have no idea, as long as the end result is a sound minded, sound moving, healthy animal with a purpose, then the pups will find homes, and more importantly, keep them.
Coming as I do, from the equine world, I have been able to watch different breed organizations (there is no overhanging AKC in the horse world) get it right, while others failed to help their breed remain true to its origins.
For many European bred warmblood horses, as well as some Spanish horses, the horse must pass a set of standardized tests to be admitted into the registry as breeding stock. If your Oldenberg stallion eats people, moves like a three legged donkey, and has toes that point at one another, you can breed him all you want, but his kids are not
Oldenbergs.
I am actually a huge proponent of this system. Yes it means that your registry cannot admit one-million new animals a year, but it provides people buying your product (and yes, horses and dogs are products, no matter how much we may love them, they are part of the same system that produces Barbie and Dr. Pepper) can be reasonably certain that it isn't a steaming pile of very expensive horseshit.
The same cannot be said about the vast majority of dog breeds. For example the other day a gentleman introduced me to his brand new two-year old sway-backed pig-shaped atopic (skin disease) 'blue' pit bull, that he said was registered somewhere (pit bulls to my knowledge are still not a breed, rather they are a type) as something. He paid $600 for this walking vet bill!
Now, I know we cannot protect people from stupid, but if every other damn dog in the country wasn't 'AKC registered', we might be able to help people escape the more egregious levels of stupid. 'AKC registered' has no meaning. It does not speak to quality or health, it is simply a list of 'begats'. People say, 'my dog is registered', like it means something, and in a better world, it would.
And yes, the blue pig-dog still had two dangly balls to make more swaybacked bad-skinned, wrinkly-faced horror shows -
yay.
Some people come down on 'conformation' as the issue, for example, the American Border Collie Association hates conformation, and if your dog gets an AKC conformation title it will be summarily booted from the ABCA - perhaps for border collies, sickle hocks, poor gait, and pigeon chests don't affect performance - perhaps border collies are magical, and do not need to have proper underlying structure to stay sound through long active lives. Talk about throwing the baby out with the bathwater!!
Form matters. This plus mind and other traits is why we have breeds to start with! Terriers who chase rats in barnyards need to be short. Greyhounds who chase mechanical rabbits need to be lanky with good structure to hold up under racing, retrievers need a long enough muzzle to retrieve.
What dogs do not need to perform these tasks is certain ear shapes, certain coat lengths (though shorter makes most sense for dogs performing outside in temperate places), and certain colors. So having a fluffy black and white border collie with just so tipped Lassie ears does not make her better at catching sheep, but pretending that form doesn't matter is foolish.
Unless you have a purpose in mind, you shouldn't breed, and that purpose should not be to make money off puppies. The goal of breeding any animal should be to produce a set of characteristics in the offspring that enables them to perform a function. I cannot see risking the chances of cross-out catastrophes in any mixed-breed experiment - maybe some are great, I just haven't seen it, and I have yet to see a cross breed that fulfills some task not already covered in existing breeds.
This brings us lastly to health. An argument can be made that mutts are healthier, and while it is true that certain issues are strongly correlated with certain bloodlines, breeding 'pure' does not necessarily produce genetic disasters - breeding poorly does. Lipizzaners are famous for the minuteness of their gene pool (six stallions at the start in the 1500s and a small herd of 250 that came through WWII). . Lipizzaners are not beset with genetic diseases.
This could be partly because genetic diseases were not permitted to enter the gene pool in the first place, and partly because many lipizzaner breeding programs very tightly controlled. Compare this to quarter horses, the largest registry in the US, and therefore, logically, one of the breeds most likely to suffer from poor and lazy breeding. Quarter horses have numerous genetic issues not found in the larger equine population. A whole disease in quarter horses persists in spite of the fact that it originated from a single over-used
stallion.
This is what happens when people forget that the point of breeding is not to produce fifty out-crops for every decent animal, but rather to have a good, sound animal every time.
For breeders and other advocates of purebred dogs to prevail in this debate they must show why their breeds exist. They must produce dogs who can be pets and can perform (to say they're mutually exclusive is just as idiotic as stating that thoroughbred stallions shouldn't have manners - they should, and many do, so it can be done). For some dogs 'perform' may simply mean be able to be potty trained, walk on a leash and not eat people - a very tall order for some of our shorter breeds!
An ABCA border collie who is so high drive that she cannot function in a real home without going nuts is as huge a disservice to the breed as a beautiful AKC champion who won't herd sheep.