Animals:

1. An Overview of Animals
2. Body Plans
3. Tissue Development
4. Organized Systems

Sponges, Cnidarians, and Unsegmented Worms:

1. Phylum Porifera
2. Phylum Cnidaria
3. Phylum Platyhelminthes
4. Phylum Nematoda and Phylum Rotifera
5. The Coevolution of Parasites and Hosts

Annelids and Mollusks:

1. Phylum Annelidia and Phylum Mollusca
2. Structure and Function in Earthworms
3. Structure and Function in Mollusks

Arthropods:

1. An Overview of the Diversity of Arthropods
2. The Ecological Considerations of Arthropods

Echinoderms and Invertebrate Chordates:

1. An Overview of Echinoderms
2. Invertebrate Chordates

Fishes:

1. Vertebrates
2. The Natural History of Fishes

Amphibians:

1. The Natural History of Amphibians
2. Reproduction and Development

Reptiles:

1. The Natural History of Reptiles
2. Reproduction and Development

Birds:

1. The Natural History of Birds
2. The Ability of Flight
3. Adaptation to Environments and Obtaining Food

Mammals:

1. The Natural History of Mammals
2. Mammalian Diversity
3. Structure and Function in Mammals
4. Mammalian Reproduction