There's a rare breed of pig that looks like a sheep.
14
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Female kangaroos have three vaginas.
2
The elephant brain weighs about 6,000g.
274
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20