Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Whales and dolphins can't taste anything other than salt.
11
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Drivers kill more deer than hunters do.
660
The Basenji dog is the only dog that is not able to bark.
4