Lake Nicaragua in Nicaragua is the only fresh water lake in the world that has sharks.
28
The animal responsible for the most human deaths worldwide is the mosquito.
200
Baby robins eat 14 feet of earthworms every day.
13
There wasn't a single pony in the Pony Express, just horses!
57
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
The smallest known dinosaur is Compsognathus.
113
The costliest cat ever is named Little Nicky, who cost his owner $50,000. He is a clone of an older cat.
204