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Reptile is an animal with tough,dry skin covered with horny scales .Some of the most widespread living reptiles are turtles,lizards,snakes,crocodiles, alligators.Reptiles are
vertebrates- animals that have a backbone.While they share characteristics common to other vertebrates-fish,amphibians,birds and mammals-reptiles display a unique combination of characteristics that distinguishes them form other vertebrates.Like amphibians,modern reptiles are cold-blooded,or ectothermic.