Early American humans hunted car-size armadillos and used their shells for houses.
12
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23