It bothers me that people would deliberately continue to breed a bad trait into an animal for atheistic reasons. I think it's fine to keep a deformed pet as an animal, I'm just not into purposely passing know genetic problems. Munchkins are the product of deliberately breeding cats with a selective dwarfism that affects the long bones in their legs to be shorter. This causes them to have increased vulerability with their spinal muscles because they are unable to stand up correctly due to their dwarfism. Yet, owners and breeders lie about how healthy they are. It's cruel to deliberately breed an unhealthy cat for our amusement.