Back in the first years of the 20th century, Delhi, India had a lot of cobras slithering around and upsetting the sensibilities of the occupying British aristocracy. Wanting to reduce the cobre population, they thought, We should put a bounty on these things. I know. We'll pay people for every severed cobra tail they bring us. But cobras can live and breed without their tails. And it didn't take the locals long to figure out that they could get paid for a severed cobra tail without killing the cobra. Cobra breeding operations started up and the number of cobras and Delhi actually increased. The results became so infamous that authority instituted pest control dubbed it the cobra fact.