Are reptiles warm-blooded or cold-blooded?

Step-by-step solution

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