Little known, patently false assertion: The English Bulldog got its underbite and tabular facial features by repeatedly running headlong into wrought-iron fences in London's posh Regents Park area. Strangely enough, a 1950's era Rolls-Royce Silver Cloud in London gained a Bulldog-like expression by doing quite the same thing, only for real. Syberites has the low, low down.
1950's Rolls Royce Silver Cloud Crashes Into Fence [internal]