Dogs have been man's pet for over 14,000 years.
224
The pea aphid insect explodes itself thereby sacrificing its life to protect its relatives from predators.
3
Elephants are the only animals that can't jump.
1
The first two years of a dog's life are equal to 24 human years.
25
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
A kangaroo cannot jump if its tail is off the ground.
29
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268