A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Female kangaroos have three vaginas.
2
There's a rare breed of pig that looks like a sheep.
14
Rattlesnake mating sessions have been known to last more than 22 hours.
232
In Australia, there are spiders big enough to eat snakes.
20
In 1949, an official boxing match between a bear and a man was held. The bear won.
41