Early American humans hunted car-size armadillos and used their shells for houses.
12
The Basenji dog is the only dog that is not able to bark.
4
Jellyfish as a species are actually older than dinosaurs and sharks.
383
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Only 3% of bird species have penises.
0
Dogs have been man's pet for over 14,000 years.
224
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