Frogs are a diverse group of amphibians that are mostly carnivorous. Frog fossils can be dated back as far as the Triassic period (200 million years ago).
Amphibians are characterised by their ability to transform gills into lungs. They also use their skin as an air breathing apparatus.
The frog life cycle is fascinating. They start out as tadpoles, which are tiny aquatic creatures with no legs and a long tail. They begin to form legs and lungs as their tail disappears, which allows them to move from the water onto land. Therefore, frogs require water to be able to reproduce.
Because frogs have such sensitive skin and specific breeding conditions, they are often good environmental indicators. Where the climate or habitat changes frogs begin to disappear, highlighting the important for protection of those particular areas.
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