Dolphins have names for one another.
18
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
A lion in the wild usually makes no more than twenty kills a year.
186
Sloths take two weeks to digest their food.
243
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23