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TIL that an animal's brains are also an essential part to tanning hides and furs, and each animal has exactly enough brains to tan its own hide.

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Wk0vA TIL “percussive maintenance” is the term for banging and shaking something until it works
edQL TIL that someone survived a cardiac arrest and 2 hours and 45 min of CPR thanks to the help of bystanders and an automatic chest-compression system.
D1L7J TIL that the blanket octopus has the biggest sexual size-dimorphism of any non microscopic organism. Females can be 6 feet long, while males are only 2.4 cms long.
pYPPG TIL that right before the Vietnam War, US president Eisenhower acknowledged that 80 percent of Vietnam population would have voted for the communist Ho Chi Minh
GA1EG TIL a border collie named Rico was the subject of the first published study on gifted dogs. The research showed that Rico understood 200 words. He also responded correctly to the word for a new object after hearing it just once. This suggested he had the canine equivalent of the ability to fast map.