examples of amphibians 
There are about 4,000 species of amphibians divided into three main groups, depending on whether or not they have a tail and limbs.
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Tailless nocturnal insectivorous amphibian usually found on land and not very adept at jumping; its body is covered with small outgrowths.
Amphibian with a flat tail found mainly in freshwater and usually feeding on insects.
Nocturnal amphibian, mainly insectivorous, with a tail; there are land and aquatic species.
Small tailless, usually insectivorous amphibian found mostly in trees near water; its digits are fitted with suction cups.
Adhesive disk surrounded by a ring; it is located at the terminal end of the limbs and used for anchoring.