Mammals are ____ and usually have hair or ____ Mammals have ____ babies. The mothers ____ babies milk. Reptiles live in ____ They have ____ and are ____. They lay their eggs ____. Amphibians live on land and in water. They have ____ They ____. Fish live ____. They have ____ instead of legs and ____ instead of lungs. They lay their eggs in water. Birds have a ____, wings, ____ and 2 legs. They ____ eggs.

Animal classification

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