Vertebrates (with backbone)
Amphibian
cold-blooded • breathe with lungs and gills • smooth, moist skin (no scales) • lay eggs •
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Bird
warm-blooded • lay eggs • have feathers & wings • two legs • breathe with lungs • have bills or beaks •
Fish
cold-blooded • breathe with gills • lay eggs • have fins •
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Mammal
warm-blooded • have hair • produce milk for young • give live birth • have hair or fur • breathe with lungs •
Reptile
cold-blooded • breathe with lungs • lay eggs • dry scaly skin •
Animal Classification Chart - Vertebrates