There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
The seahorse is the only fish to have a neck.
12
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23