Depends on the breed. People serious about a certain breed of retriever or hound will take care to mix bloodlines from all over the country to avoid the inbreeding. I've been told Dalmations were ruined by Disney's 101 Dalmations movie. They became really popular and all the Chad's and Buffy's we mentioned in the other thread snatched them up from unscrupulous breeders.

I sent my yellow to a trainer who has several national champions to his credit. He will only train beagles & labs because he says those two breeds have no innate aggression- just a desire to please and a desire for companionship. I'm not aware of any maladies that befall either breed except labs get fat from lying in front of the fireplace. They are born to work.