1. Animals:  Explore, Discover, Connect
2. World Wildlife Federation
3. Enchanted Learning-Animals
4. Enchanted Learning-Mammals
5. eNature.com

Birds

1. The Aviary
2. Enchanted Learning-Birds
3. KidsKonnect-Birds
4. Whooping Crane
5. Operation Migration
6. Bring Back the Cranes
7. The Paper Airplane Flight Simulator

 Endangered Species

1. Endangered Species-Bagheera
2. EndangeredSpecies.com

Marine

1. OceanLink
2. Enchanted Learning-Sharks
3. Whale Times
4. Enchanted Learning-Whales

Zoos

1. Sedgwick County Zoo
2. Henry Vilas Zoo
3. Oakland Zoo
4. San Diego Zoo