On Monday, this graphic video of an unknown girl throwing puppies into a river appeared online, much to the consternation of internet-using animal-lovers everywhere. But don't fret: The weirdos and agitators of 4chan's /b/ are hot on the trail.

This week, the Internet was transfixed by the Evil British Cat Bin Woman, Mary Bale, who was caught on tape throwing a neighbor's cat into a trash can. Guess who tracked her down? The web marauders of 4chan's /b/ board.