It has been scientifically proven that stroking a cat can lower one's blood pressure!
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The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
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Early American humans hunted car-size armadillos and used their shells for houses.
12
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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Only 3% of bird species have penises.
0
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23