The seahorse is the only fish to have a neck.
12
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Parrot parents "name" their children with a signature call.
112
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12