A scorpion can hold its breath for up to 6 days.
19
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The reindeer is the only mammal that can see UV light.
17
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Female kangaroos have three vaginas.
2