In just about every species of mammal, the female lives longer than the male.
43
There are over 58 million dogs in the U.S!
76
A cockroach will live nine days without it's head, before it starves to death.
26
Starfish don't have brains.
132
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
The elephant brain weighs about 6,000g.
274
The quills of a porcupine are soft when they are born.
90