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TIL in the mandrill species, if a beta male wins a fight, then it gradually transforms into an alpha male - gaining larger testicles, more colorful skin, and the ability to produce offspring with females. If an alpha male loses a fight, then the reverse happens.

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5VaP TIL that in 1893 H.H.Holmes (one of the first documented American serial killers) built a maze like hotel with full of traps where he murdered his victims
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QJoOX TIL about Marjan the lion, a beloved member of the Kabul Zoo in Afghanistan; he witnessed the country under both Soviet and Taliban occupation and survived multiple artillery strikes on the zoo during the Afghan Civil War as well as being blinded by a grenade. In 2002, he died of old age at 23 years
KO979 TIL that the Massachusetts Institute of Technology offers a "pirate certificate" to students who complete the archery, sailing, fencing, and pistol or rifle shooting courses. The department frequently holds "pirate induction" days and has had a steady stream of students awarded the achievement.
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