they have scales
Reptiles have scaly skin
Some characteristics of reptiles include having scaly skin, being cold-blooded, laying amniotic eggs, having a three-chambered heart, and being predominantly terrestrial. They also typically have claws, scales, and breathe with lungs. Reptiles have adapted to various environments and exhibit a wide range of sizes and physical features.
Cold Blooded, Offspring come from eggs, scales, and in some species webbed feet
Some characteristics of reptiles are, They have backbones or vertebrae, they are cold blooded, they have thick protective scales and lay eggs. All reptiles breathe air from their lungs. They have 3 heart chambers. Some examples include lizards, snakes, crocodiles and alligators
Reptiles and birds share enough common characteristics to be classified in the same clade called Sauropsida, which includes all modern reptiles and birds.
Yes. Some alien races have animal characteristics (i.e. mammals, reptiles, amphibians, insects, arachnids, gastropods, reptomammals, reptavians, crustaceans, avians, mammavians, etc.).
Lay eggs
No. Birds, fish and reptiles are each a classification of "vertebrates" of their own. They all have quite different characteristics.
Birds are warm-blooded.
Yes some reptiles do have gills.
well,some reptiles do some don't but in the record there are more reptiles that have backbones
All reptiles have some of the same characteristics, but all are different in their own ways. The characteristics they share is that they are cold blooded. This means that they do not have an internal heating system that raises their body temp, so they must sit in a warm spot to get warm. They also have scales, not skin. All reptiles lay eggs.