A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Giant Anteaters' front legs look like a panda.
48
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5