Comparison between Amphibians and Reptiles

Differences between 

Amphibians and Reptiles

Features	Amphibians	Reptiles
Group	They come under class Amphibia	They come under class Reptilia
Habit and habitat	They usually stay near water sources to prevent drying out, and have smooth skin.	They are groups of animals that breathe air, have scales on their bodies, and lay eggs.
Breathing	Gills, skin and lungs	Lungs
Metabolism	Ectothermic (Poikilothermic or cold-blooded)	Ectothermic (Poikilothermic or cold-Blooded)
Metamorphosis	Yes. Breathes water through gills until it develops lungs.	No. Looks like a miniature adult when born.
Heart	3-chambered. Two atria and one ventricle	3-chambered, two atria and one ventricle. But ventricle is partially divided. Crocodiles have 4-chambered heart.
Limbs	Short fore- limbs and long hind limbs. They are generally pentadactyl (with five webbed digits).	Four limbs are present (except snakes).
Skin	Smooth, moist, rather sticky skin. Mucous glands are present.	Dry and scaly. Scales are made of keratin. Skin is found underneath the scales.
Eggs	Soft gel surrounding their eggs without any hard covering. Usually found in water or damp places.	Amniotic egg. Have hard, leathery eggs laid on land or they keep eggs in their bodies until they hatch.
Reproduction	Sexual. External fertilization	Sexual. Internal fertilization
Examples	Frogs, toads, newts, salamanders, caecilians or blindworms etc	Snakes, lizards, crocodiles, turtles etc