A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Mosquitoes don't just bite you, they also pee on you.
11
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
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18