Mammals have hair, internal reproduction (live births), lungs with alveoli, are endothermic, and feed young with milk from mammary glands.
Mammals are characterized by hair, internal reproduction with live births, lungs with alveoli, are endothermic, and feed their young with milk from mammary glands.
| Front | Features of mammal: body covering, reproduction, breathing, temp., other features |
|---|---|
| Back | hair, internal (live births), lungs with alveoli, endothermic, feed young with mammary gland milk |
Tags: 5_6_vertebrate, classes
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