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TIL surgically cropping a dog's ears or docking its tail can artificially alter the way dogs communicate with other dogs and humans. These procedures can have a significant impact on how dogs communicate and interact for the rest of their lives.

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ADDEd First, a disclaimer: Selling your organs is illegal in the United States. It's also very dangerous. Handing off an organ is risky enough when done in a top hospital, even more so if you're doing it for cash in a back alley. No, really: Don't do this. OK? OK.
9YLDB TIL The modern “Western” depiction of Santa Claus can be traced back to a 1931 Coca-Cola advertising campaign.
Xwx8 TIL that this is the oldest known photograph of a human being in existence. This is a busy street and there was tons of traffic, but since the exposure was so long, about 15-20 minutes, none of the moving figures can be seen. Only one man shows up.
ZElG TIL: 51% of American households pay no income tax
QjaM TIL after receiving a local anesthetic and root-canal treatment at his dentist, a 38-yo man has been experiencing a real ‘Groundhog Day’ type memory loss. For the better part of a decade, he has woken up every morning thinking it is the day of his original dentist’s appointment