A dragonfly has a lifespan of 24 hours.
24
The oldest recorded elephant lived for 82 years.
213
A bird 'chews' with its stomach.
33
Some ribbon worms will eat themselves if they can't find any food.
-33
The abdomen of the ant contains two stomachs. One stomach holds the food for itself and second stomach is for food to be shared with other ants.
113
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
Dogs have been man's pet for over 14,000 years.
224