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TIL there's a species of caterpillar, belonging to the Nematocampa genus of moths, that responds to loud noise (e.g. shouting) by enlarging long appendages on its body until fully erect

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X45j TIL there is a species of wasp that subdues a cockroach with two precise stings, takes it to its burrow by pulling on its antennae like a leash, blocks the entrance with pebbles, and then lays an egg inside the cockroaches’ body so that the baby wasp can feed on the zombie cockroach for days.
DQA4r TIL: Mickey Mouse will be in the public domain in 2024.
ZX4 TIL that the Portuguese Man O’ War jellyfish is not a single creature, but actually a colony of interconnected specialized organisms functioning in unison, which are themselves incapable of independent survival
5VPAQ TIL, that a 1-second-long, 1-watt sound wave in water, weighs about 0.1 milligrams. The weight of sound waves is created by it's interactions with gravity.
Z8xnD TIL of "peine forte et dure", a type of torture used in the common law legal system when a person remained silent upon questioning. It consisted of progressively heavier stones placed upon the chest until either a plea was entered, or the person died. It’s been legal for ~500 years, until 1772.