Early American humans hunted car-size armadillos and used their shells for houses.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Bats sleep 18-20 hours per day.
5