Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
In just about every species of mammal, the female lives longer than the male.
43
The only food that cockroaches wont eat are Cucumbers!
120
Only female mosquitoes bite and drink blood.
28
A woodpecker can peck twenty times a second.
28
A cow gives nearly 200,000 glasses of milk in her lifetime.
33
Dalmatians are born without spots.
101