Gorillas can catch human colds and other illnesses.
205
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Bats sleep 18-20 hours per day.
5
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
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205