Animals

1. Mammals

1.1. Warm blooded

1.2. Live births

1.2.1. Humans

1.2.2. Dolphins

1.2.3. Dogs

1.2.3.1. Loyal

1.2.3.2. Fur

1.2.3.3. Tails

1.2.3.3.1. Long tails

1.2.3.3.2. Short tails

1.2.3.3.3. Straight tails

1.2.3.3.4. Curly tails

2. Reptiles

2.1. Cold blooded

2.2. Scales

2.3. Eggs

3. Amphibians

3.1. Water & Land

3.2. Eggs

4. Fish

4.1. Scales

4.2. Gills

4.3. Fins

4.4. Eggs

5. Birds

5.1. Feathers

5.2. Eggs

5.3. Wings

6. Insects

6.1. Wings

6.2. 6 legs

6.3. Antena

7. Arachnids

7.1. 8 legs

7.2. Poisonous

7.3. Eggs