Bats sleep 18-20 hours per day.
5
Cats and dogs can hear ultrasound.
350
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
When dragonflies mate, their tails form a love heart.
22
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40