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TIL in the efforts to capture a man-eating tigress, Indian wildlife officials used the perfume Obsession for Men by Calvin Klein as bait. The perfume contains a pheromone called civetone, which a US study found to be attracting to jaguars.

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4KB6 TIL that in the movie ‘Elf,’ Will Ferrell’s reaction to the Jack in The Box startling him was genuine. Director John Favreau controlled it during filming with a remote control.
lo941 TIL a coin flip actually has a 51/49 probability of landing heads or tails -- favoring the side facing up when flipped. If you spin a US penny on its side, however, it has an 80% chance of landing tails up.
wLwBY TIL that during the Austro-Prussian War, Liechtenstein had an army of 80 men. During the conflict no men were injured or killed and they returned home with 81 men because they’d made an Italian friend along the way. The army was then disbanded and Liechtenstein hasn’t had a military since.
KYR8E TIL blood lost during a cycle isn’t blood that’s been “stored” over the month long cycle, it’s blood coming from blood vessels in the uterus. As the uterine lining pulls away, ‘tiny’ ruptures/tears are caused in the blood vessels, and heavy cycles are caused by enlarged vessels & hormone imbalance
XK6X TIL that during World War 2, the British captured Germans and put them in a bugged mansion where they served them wine and food and thus they were able to gather important intelligence from casual conversations between the ‘prisoners’ that helped them greatly win the war