A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
A group of unicorns is called a blessing.
304
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
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
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12