Because quality is not a priority for cruel breeders, they don't bother to remove medically
compromised dogs from their breeding stock, resulting in generation after generation of dogs with unchecked hereditary defects.
Well, for one thing, the United Kennel Club points out serious issues withAmerican pit bull terriers
bred to be this large: «Excessively large or overly massive
dogs and
dogs with a height and / or weight so far
from what is desired as to
compromise health, structure, movement and physical ability.»