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TIL that some frogs have razor sharp teeth!

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PWyZ TIL the first historical document containing the @ symbol was a wheat shipment from Castile to Aragon in the year 1448.
Z8XZa TIL that in 2014 a Cockatoo celebrated it’s 100th birthday, it was also noticed by Queen Elizabeth II who sent a birthday card as is custom to 100 year olds.
AaVd TIL time-travel, faster-than-light travel and “sliding between parallel worlds” are theoretically possible if there are multiple time dimensions.
LQyVZ TIL that the first written mention of the card game "Blackjack" was in the novel "Rinconete y Cortadillo", written by Miguel de Cervantes (Author of "Don Quixote" ). likely because he was a gambler. The game is used by the protagonists to cheat people out of money.
9YxoX TIL that the term “Cup Of Joe” is named after Josephus Daniels. Daniels, a former secretary of the US Navy, banned the consumption of alcohol in the Navy. Thus, increasing the consumption of coffee which was referred to as a “a cup of Josephus Daniels” which was later shortened to “a cup of Joe”