Fish, Vertebrates that lives in water and have fins instead of arms and legs, Their bodies are covered with scales., Amphibians, live in water and on land. Their bodies are covered with a smooth, wet skin., Reptiles, Most live on land. Some live in water. Their bodies are covered with dry scales., Birds, They are covered with feathers and have wings instead of arms. Most of them can can fly, Mammals, They are covered with hair or fur. Most of them live on land. Some live in the sea.

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