Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A mole can dig a tunnel 300 feet long in just one night!
24
Honeybees never sleep.
276
Parrot parents "name" their children with a signature call.
112
Hyenas regularly eat the feces of other animals!
-1
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There's a rare breed of pig that looks like a sheep.
14
Only female bees work.
20