Rats multiply so quickly that in 18 months, two rats could have over a million descendants.
33
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
A pig's penis is shaped like a corkscrew.
22
Penguins can convert salt water into fresh water.
97
Rats can tell the difference between two human languages.
49
Pumbaa from "The Lion King" was the first character to fart in a Disney movie.
31
A lion's roar can be heard from more than five miles away.
40
The seahorse is the only fish to have a neck.
12