sentence: Amphibians are the only vertebrates to go through metamorphosis.
sentences_after: This means that their young looks different than adult amphibians. Male frogs and toads will croak to attract a female. When a female frog has chosen a mate, the male frog will hop on top of her. Frogs can lay up to 100 to 60,000 eggs in one clutch.
concept_name: amphibian
headings: Amphibian Reproduction
categories: Amphibians