Stradivarius, I'll see your pic of two mongrels with cropped ears fighting and raise you 2 pics of famous, fighting pit bulls without cropped ears or docked tails.
Colby's Tige 2xw 1896
Conditioned 35lbs
CH Colby's Paddy x Colby's Jennie 1xw
He went over 3hrs in a well known battle
CH Tudor's Fighting Peter
Son of Galtie, dam Colby's Nancy was line bred on Tige.
He was the first UKC fighting champion, conditioned at 33-34lbs.
Tudor went on to win many UKC matches with several dogs.