- Audubon’s Birds of America from the Public Library of Cincinnati and Hamilton County images of the 435 hand colored plates in the original volumes
- AllAboutBirds online guide for species identification, includes in-depth information, sound, video and maps from the Cornell Lab of Ornithology
- American Kennel Club information on over 150 dog breeds, also information on breeders, choosing a dog and dog ownership
- amphibiaweb amphibian biology and conservation
- Care for Pets information on pet health, traveling with a pet, pet loss, selecting a pet and a veterinarian, from the American Veterinary Medical Association
- Cornell Lab of Ornithology Macaulay Library Sound & Video Catalog searchable database of animal sound clips and videos
- Critical species information on threatened species from the World Wildlife Federation, alphabetical by animal
- Dino Directory a guide dinosaurs with over 1294 images, from London’s Natural History Museum
- eBird a joint effort from the Audubon Society and the Cornell Lab of Ornithology, this site’s goal is to maximize use and accessibility of the vast number of bird observations made by professional and recreational watchers in order to better understand distribution of birds
- Endangered Species from the U.S Fish and Wildlife Service information on endangered species in U.S. states and territories
- Familiar Birds electronic book collection taken from the 21 volume series, “Life Histories of Familiar North American Birds”, contains information on hundreds of species
- Feline Health Center is a veterinary medical specialty center devoted to improving the health and well-being of cats everywhere
- Northeast Fisheries Science Center Information on the NOAA fisheries and information on the fish in the New England and Mid-Atlantic Regions
- Frogs: A Chorus of Colors frog sounds, facts, etc. from the American Museum of Natural History
- Merck Veterinary Manual comprehensive animal health reference
- National Audubon Society information on the society itself and a wealth of information in the birds and science section
- National Marine Mammal Laboratory reports on research on marine mammals, including ecology and behavior, populations, status and trends
