Parrot parents "name" their children with a signature call.
112
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Sheep, goats, octopuses, and toads have rectangular pupils.
7
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19