General Resources
Smithsonian's National Zoo & Conservation Biology Institute
Alphabetical list of animals, birds and reptiles with good descriptions about each.
Animal Diversity Web (ADW) is an online database of animal natural history, distribution, classification, and conservation biology at the University of Michigan.
Provides knowledge of the many life-forms on Earth - of animals, plants, fungi, protists and bacteria.
The BHL portal provides free access to hundreds of thousands of volumes, comprising over 57 million pages, from the 15th-21st centuries. In addition to public domain content, BHL works with rights holders to obtain permission to make in-copyright materials openly available under Creative Commons licenses.
IUCN Red List of Threatened Species
Includes details profiles of species, as well as links to other information sources.
Uses science, exploration and storytelling to provide information about mammals.
Learn more about your favorite animals.
Fun facts about animals and more.
A place online to find the biggest, baddest, and the best in the world of extremes and learn about the science behind what makes each the most extreme example of its kind.
Ask A Biologist is intended to serve grades preK-12, and to be available as a resource for teachers and parents. Topics include animals, biomes, birds, and plants.
Names of males, females, babies and groups of animals.