Animals

1. Needs

1.1. Gases

1.2. Water

1.3. Foods

1.3.1. Plants

1.3.2. Meats

1.4. Shelters

2. Habitats

2.1. Forests

2.2. Deserts

2.3. Water

2.4. Glassland

2.5. Tundra

3. Life cycles

3.1. Vertebrate**Three stages -- before birth, young and adult

3.2. Insects**Four stages--egg, larva, pupa, adult

4. In the past

4.1. Dinosaurs

5. Classification

5.1. Vertebrate

5.1.1. Reptiles

5.1.1.1. Cold-blooded

5.1.1.2. Have scales

5.1.1.3. Lay eggs

5.1.1.4. Breathe air

5.1.1.5. e.g. snakes, turtles

5.1.2. Amphibians

5.1.2.1. Cold-blooded

5.1.2.2. Breathe both in lands and water

5.1.2.3. Lay eggs

5.1.2.4. e,g, frogs, toad

5.1.3. Birds

5.1.3.1. Warm-blooded

5.1.3.2. Covered by feathers

5.1.3.3. Have wings

5.1.3.4. Lay eggs

5.1.3.5. e.g. chickens, ducks

5.1.4. Fish

5.1.4.1. Cold blooded

5.1.4.2. Have fins and scales

5.1.4.3. Lay eggs

5.1.4.4. Have gill to breathe

5.1.4.5. e.g.shakes, eel

5.1.5. Mammals

5.1.5.1. Warm-blooded

5.1.5.2. Born baby

5.1.5.3. Have hair and fur on body

5.1.5.4. e.g. cats, dogs, human

5.2. Non-vertebrate

5.2.1. Insects