The document classifies animals into two types - invertebrates, which do not have backbones such as starfish, and vertebrates, which do have backbones such as lions. It further breaks down invertebrates into types like cnidarians, mollusks, and echinoderms that have either an endoskeleton or exoskeleton. Vertebrates are classified as cold-blooded like amphibians and reptiles, or warm-blooded like mammals.

1. Classification of Animals

2. Invertebrate Vertebrates Two Types of Animals

3. Invertebrates are animals that do not have backbones. An example of an invertebrate is the star-fish shown below. Invertebrates

4. Vertebrates are animals that have backbones. An example of a vertebrate is the lioness shown below. Vertebrates

5. Cnidarians Mollusks Echinoderm Endoskeleton Arthropods Exoskeleton Types of Invertebrates

6. Cold-blooded Warm-blooded Amphibian Reptile Mammal Types of Vertebrates