Under extreme stress, some octopuses will eat their own arms.
198
Cat urine glows under a black-light!
43
The venom of a small scorpion is much more toxic than the venom of a large scorpion.
60
A rodent's teeth never stop growing.
16
Some lions mate over 50 times a day.
61
Only female mosquitoes bite and drink blood.
28
Elephants are among the most emotional creatures in the world - they have even been known to rescue other animals, such as trapped dogs.
25
Only 3% of bird species have penises.
0