Because of the shape of the teeth
No, alligators are not mammals, they are reptiles.
Turtles are reptiles, not mammals.
There are more mammals because of the dinosaurs.
reptiles because of the dinosaurs
Snakes are reptiles. Both mammals and reptiles are animals.
Marsupials, because Reptiles have never been mammals and have always had their offspring in eggs outside of them.
Mammals are warm blooded and reptiles are cold blooded.
Mammals are not closely related to reptiles
The physical changes from reptiles to mammals are there skin. Reptiles have dry scaly skin and mammals have smooth skin.
No reptiles are mammals. Reptiles reproduce by laying eggs whereas mammals bear live young.
They are mammals.