Flying lizard |
Birds |
Belongs to class reptilia. |
Belongs to class aves. |
Cold blooded vertebrates. |
Warm blooded vertebrates. |
Body covered by dry and rough scales. |
Body covered by feathers. |
Two pairs of pentadactyl limbs. |
Forelimbs modified into wings. |
Heart has two auricles and one partially separated ventricle. |
Heart completely four chambered. |
Jaws and teeth present. |
Jaws and teeth replaced by horny beak. |