Characteristic features of Amphibians:

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Habitat: As their name suggests (from Greek, Amphi meaning dual and bios meaning life), amphibians can live in both aquatic and terrestrial habitats.

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Limbs: Most amphibians possess two pairs of limbs.

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Body Division: Their body is typically divisible into a head and a trunk. Some species may also have a tail.

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Skin: Amphibian skin is moist and lacks scales.

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Eyes: Their eyes are equipped with eyelids.

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Ear: A tympanum serves as their ear.

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Cloaca: The alimentary canal, urinary, and reproductive tracts all open into a common chamber called the cloaca, which then opens to the exterior.

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Respiration: Respiration in amphibians occurs through gills, lungs, and through their skin.

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Heart: They have a three-chambered heart, composed of two auricles and one ventricle.

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Body Temperature: Amphibians are cold-blooded animals.

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Sexes: Sexes are separate in amphibians.

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Fertilization: Fertilization is external

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Development: They are oviparous (egg-laying), and their development is indirect.

Examples of amphibians include Bufo (Toad), Rana (Frog), Hyla (Tree frog), Salamandra (Salamander), and Ichthyophis (Limbless amphibia)