Let me preface this by saying a few things. First, all of my dogs are rescues. All have been altered. One (Tango) was used as a "breeding" dog and still suffers from the time she was mistreated in this way. I don't breed dogs, have never bred a dog, have no desire to breed dogs. My question is PURELY because I don't have this knowledge and would like to better understand.
So....there is a very heartbreaking thread going about the dangers of breeding if you don't really know what you're doing. And there is a lot of discussion about having the proper testing done, having the pedigree of all dogs involved, having many things that a lot of careless breeders don't have.
But here's my question. In SOME cases (not all, trust me I know that) a mixed-breed dog can be healthier, smarter, and more balanced than a pure bred dog, and this has been largely attributed to inbreeding with purebreds (from what I understand). And I do know some breeds have actually gone through periods of selective cross-breeding to bring in outside genes because the inbreeding was so severe.
So as a breeder, when breeding only the "best" to the "best" in an effort to better the breed, how do you prevent inbreeding? How do you prevent the lines becoming so crossed and double-crossed that you can't help but inbreed? Because I would think that eventually, if breeders truly are that selective about their breeding programs, eventually all of the dogs would be drawing from the same gene pool to some extent, which would lead to problems, not to better dogs, even with the most careful, most responsible breeders out there.
Please understand - I'm not trying to be critical, not trying to do ANYTHING except understand how these things can be prevented. And if it does get to that point, how do you go about breeding in outside lines to bring back health and eliminate the problems, but without diluting the breed?
Hope nobody takes offense to the questions.....I really, truly just don't understand!