A rodent's teeth never stop growing.
16
At birth, a panda bear is smaller than a mouse.
40
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Only female bees work.
20
Mosquitoes are attracted to the color blue twice as much as any other color.
28