Bats sleep 18-20 hours per day.
5
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Cows can sleep standing up, but they can only dream lying down.
745
The Basenji dog is the only dog that is not able to bark.
4
Sloths take two weeks to digest their food.
243
Whales and dolphins can't taste anything other than salt.
11
One in three dog owners say they have talked to their pets on the phone.
427