No it does not, not breeding for form or for function gives us the bull dog we see today...both English and American.
In theory the English bulldog should have died out the same time animal baiting did.
The only thing that kept it going was the sport of dog showing.....and that's another subject in its own right.
Natural selection is best observed in wild canines, African wild dogs are a good start....pretty sure they are also playing banjos as well and yet they are suppose to free of many problems suffered by domestic dogs.
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