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TIL that in a zoo, tigers and lions are fed ice cubes made by freezing the blood known as "bloodsicles." This is done to provide cooling to them in a hot weather.

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9wKyX TIL Since 1954, the supernova star iPTF14hls has exploded six times, somehow surviving each time. It’s a bizarre example of a “zombie star”.
LNjd TIL King John of Bohemia (who was blind) died in battle (where his retainers would lead his horse into the thick of the fighting, where he would then flail his sword around) was reported to have said: “Let it never be the case that a Bohemian king runs [from a fight]!”
KYgD6 TIL that a set of triplets found each other coincidentally after being separated at adoption for a pyschological experiment, when a college student mistook one of the triplets for his unknown brother. Once the two reunited, the unusual story made the paper catching the attention of the third brother
MQ4K TIL All humans are born “premature” because their large brains wouldn’t have fit through the birth canal
Zpw1a TIL That when cholera was appearing in London in the 1830s one prescribed cure was to inject turpentine and mutton stew up the anus