What type of skin do reptiles have?

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Reptiles are mostly terrestrial animals and their body is covered by dry and cornified skin. Heart is usually three-chambered in reptiles, but four-chambered in crocodiles . Reptiles are poikilotherms..Reptiles are poikilotherms. Fertilisation is internal. Reptiles are oviparous and development is direct.The main characteristic feature of Aves (birds) is the presence of feathers. Aves are warm-blooded animals, also known as homoiothermous, which means they are able to maintain a constant body temperature