a bird has feathers, lungs, wings, and two legs parents feed there young until they are old enough to get there own food
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MAMMALS are covered with hair or fur mammals with little hair or fur stay warm in other ways than animals with a thick layer of hair of fur
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A vertebrate is a mammal, Bird, FISH, amphibians or reptiles
most fish have narrow bodies that makes it easier for them to swim and have scales and gills
tadpoles (baby frogs) have tails and gills to help them in the water lungs and legs start to grow as they get o
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