Classes of Animals

Vertebrates

Animals that have a backbone or spinal cord (fish, birds, mammals, amphibians and reptiles). They can either be cold or warm blodded.

Life cycle of Reptiles

Egg- young adult- adult

Life cycle of Birds

Egg-Chick-adult

Life cycle of Amphibian

Egg-tadpole-young adult-adult

Life cycle of Fish

Egg-young adult-adult

Characteristics of Warm-Blooded Animals

Warm-blooded animals are able to regulate their internal temperature. They can sweat or pant to cool off and have fur and feathers to help keep them warm. They are endothermic-meaning inside heat.

Metamorphosis

(in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages. (in an amphibian-the changing of a tadpole into a frog).

Fish

1. Breathe underwater using gills not lungs. 2. Live in water. 3. Have scales and fins. 4. Lay many eggs. 5. Cold-blooded

Birds

1. Have feathers and wings. 2. lay eggs. 3. have 2 legs. 4. ear holes instead of ears. 5. warm-blooded.

Mammals

1. Have hair or fur. 2. give birth to live young. 3. mammal mothers nurse their young with milk. 4. have lungs and need air to breather. 5. warm-blooded

Reptiles

1. Have scales and not fur. 2. Have dry skin. 3. Usually lay eggs and sometimes live young. 4. ear holes instead of ears. 5. 4 legs or no legs. 5. Cold-blooded.

Amphibians

1. Live on land and water. 2. Have webbed feet. 3. breathe with lungs and gills. 4. moist, smooth skin (no hair or fur). 5. 4 legs (sometimes none). 6. Lay many eggs 7. cold-blooded

Characteristics of Cold-Blooded Animals

A cold-blooded animal cannot maintain a constant body temperature. The temperature of their body is determined by the outside surroundings. Cold-blooded animals will move around during the day between the shade and the sun to warm-up or cool down. They are ectothermic-which means outside heat.

Land Mammals

Have 4 legs and ears that stick out.

Life cycle of Mammal

Live birth-baby-young adult-adult