The Real Physics Behind Cow-Tipping
Judging by the lack of documented instances as well as the numbers required to achieve this "popular" rural prank, it's likely that tipping a cow hasn't happened anywhere near as much as people claim, if ever.
Infograph adapted from Popular Mechanics, based upon the 2005 work of University of British Columbia student Tracy Boechler and doctor of zoology Margo Lillie.