Ducks will only lay eggs early in the morning.
36
There are more insects in one square mile of rural land than there are human beings in the world.
55
Dolphins nap with one eye open.
-7
Anteaters prefer termites to ants.
18
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
A duck's quack doesn't echo, and no one knows why.
173
Turtles can live for more than 100 years.
84
Rattlesnake mating sessions have been known to last more than 22 hours.
232