Why are pit bulls ears cropped?

Just a guess, but it may be a holdover from dog fighting. Ears and tails may have been cropped because they were liabilities.

That is an incorrect answer. The Pit Bull was a game dog originally used for hunting large game. The ears were cropped due to the fact that big ears make handles that can be torn and cause bleeding. AS for the "Fighting" you are way off base. Cropped Ears arent commonly found on "Fighting" Dogs as it leaves the ear opened and exposed which can lead to infection. Also tail docking in Fighting dogs...Also a NO a dogs tail gives them natural balance so Fighters didnt have their tail docked. Please if you are going to answer a question know what your talking people ask questions for a real answer not someone prejudice.