- Biological Diversity Animals I
- Presents a treatise on the animal kingdom. With illustrations and links to other works.
- Cool Cosmos: Infrared Zoo
- Offers infrared images of birds, reptiles and amphibians, mammals, and insects and arachnids to demonstrate the differences between warm-blooded and cold-blooded animals.
- Desert Animals
- Enumerates and gives a brief discussion on the different fauna living in this environment.
- Deuterostomes: Echinoderms, Chordates
- Describes the members of the two phylums, including physical similarities and differences.
- Echinoderms to Chordates
- Integrated Biology course lecture on two phylum, their characteristics, and member classes.
- Invertebrate Zoology OnLine
- Features original anatomical descriptions for more than 100 invertebrate species.
- Museum of Animal Perspective: Dwelling Cams Gallery
- Permanent gallery of webcams from inside animal nests and burrows, ROV imagery, and animal borne imaging.
- Naracoorte Caves National Park: Insectivores
- Describes species, percentage of animals by diet type, and characteristics.
- National Geographic Animals and Nature
- Provides news and information on the world's fauna. Includes, wallpapers, TV programs and publications.
- Origin of the Metazoan Phyla: Molecular Clocks Confirm Paleontological Estimates
- Presents an article on the probable beginnings of the animal kingdom.
- US EPA National Coastal Assessment Data
- Provides list of phylum, class, genus, and family.
- Watershed Connections: Birds and Mammals
- River Basin Center describes taxonomy and characteristics, background. Includes activities and internet resources.
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