Classification

1. Group 3 (i.e. birds)

1.1. Characteristics

1.2. Examples

2. Group 4 (i.e. mammals)

2.1. Characteristics

2.2. Examples

3. Group 1 (i.e. reptiles)

3.1. Characteristics

3.2. Examples

4. Group 2 (i.e amphibians)

4.1. Characteristics

4.2. Examples

5. Group 2 (i.e fish)

5.1. Characteristics

5.2. Examples