This is what a Bull Terrier looked like 100 years ago - a fit and functional, well-balanced and in-proportion dog. Note in particular this dog's head... there's nothing abnormal here.
And here's a modern Bull Terrier - bred by a chap in called Lyndon Ingles in Wales who breeds for a Bull Terrier that is a working all-rounder.
The breeder of that 1915 Bull Terrier would have no problems recognising Lyndon's dog. But what on earth would they make of these three Bull Terriers, shown at Crufts today?
I always get a rise from the Bull Terrier breeders when I dare to mention that what they've done to the Bull Terrier's head is pointless and ugly.
So I'll say it again.
What show breeders have done to the Bull Terrier's head is pointless and ugly.