Human birth control pills work on gorillas.
52
An ant brain has about 250 000 brain cells. A human brain has 10,000 million so a colony of 40,000 ants has collectively the same size brain as a human.
118
Only 3% of bird species have penises.
0
Alligators can live up to 100 years.
337
A rat can go without water longer than a camel can.
26
Some ribbon worms will eat themselves if they can't find any food.
-33
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264