Quoting I declare a Time War:" It drive me Effing mad! My neighbors irresponsibly breed chihuahuas and they are constantly yapping all ... [snip!] ... $250 for sick inbred dogs. I keep wanting to call animal control but I'm afraid they will take the dogs to kill shelter. "
Some degree of in and line breeding is actually common and necessary to strengthen desirable traits.
It's smurfed up though that you'd rather the dogs be backbred than possibly euthanized. Backbreeding is really cruel to do to any animal and rates right up there with other forms of physical animal abuse. Backbreeding can kill a bitch, especially in small and toy breeds.