The cat brain weighs about 30g.
167
A rodent's teeth never stop growing.
16
The head of a jellyfish is called the "Bell."
6
To find out if a watermelon is ripe, knock it, and if it sounds hollow then it is ripe.
84
A pig's orgasm lasts for 30 minutes.
303
Polar Bears can eat more than 50 lbs. of meat in one setting.
25