Animals A-Z - Great Facts about your favorite zoo animals.

BioKids Critter Catalog - Great animal information including pictures, animal sounds and classification. 

Especies Fact Sheets - Detailed information about endangered species on each continent.

E-Nature.com - Sponsored by the National Wildlife Federation, this site offers field guides to a large number of North American animals and plants.

Endangered Specie - This site include causes, facts, photos, regions, laws and more.

Zoom Dinosaurs - Everything you wanted to know about dinosaurs. Fabulous site!

Smithsonian National Zoological Park -  Zillions of animal pictures.