These animals have warm blood, and have hair or fur on their bodies. Their babies are born alive. The mothers feed their babies milk. What are they?
mammals
These animals live on land and in water. They are cold-blooded. They have gills when they are young. They have smooth skin. They lay their eggs in water. What are they?
amphibians
These animals have a beak, wings, feathers and 2 legs. They lay eggs on land. They have warm blood. What are they?
birds
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