I have been toying with the idea of beginnig a thread on this very topic but since it seems to have landed here I will jump in again. Number one, I beleive that the OP was really just asking a question regarding inbreeding of animals. Good question and one that is asked often.
I think the...
Lets not forget that without a certain amount of linebreeding (inbreeding) we would not have distintive breeds in any species. As animals have become domesticated they in turn have been selectively bred to create or fix a type. This desire to fix a type is driven by human need, desire, or...