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TIL that a rattlesnakes rattler is made from skin shed during molting. They start with one “button” (which is made of the same material as our fingernails), and add each time it molts.

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loPW7 TIL that the lead singer of Toto was the singing voice for adult Simba in The Lion King
1agn8 TIL Former Triple Crown winner American Pharoah has sex 3 times a day everyday and his owners charge a fee of $200,00. This leads to an annual revenue of about $30,000,000.
Ey1P TIL Alexander Graham Bell originally suggested ‘ahoy’ be adopted as the standard greeting when answering a telephone, before 'Hello’ (suggested by Thomas Edison) became common.
El5p TIL: Top gear UK was chased out of an Argentinian village by Falklands war veterans throwing rocks
pYwM4 TIL Earwax is produced by the ear to clean and protect itself. It's secreted by glands in the skin that line the outer half of your ear canals. The wax and tiny hairs in these passages trap dust and other foreign particles that could damage deeper structures, such as your eardrum