STUNTMAN-I have heard that, but have never looked into it myself. I understand that there is quite a bit of inbreeding/linebreeding in race horses, is the loss of speed specific to dogs? Do jackrabbits, coyotes and deer get slower each generation? The big greyhound farms are not inbreeding/linebreeding their own dogs?
I know a fella that bred a bitch back to her sire, and got a pup that was bigger, faster and stronger than his sire/grandsire? Was that a fluke?
Take care.