Amphibians are a class of cold-blooded vertebrates belonging to the class Amphibia, characterized by their ability to live both in water and on land, hence called ectothermic with dual life. They typically have moist, glandular skin without scales, which allows them to breathe through their skin as well as lungs. Amphibians undergo metamorphosis, starting life as aquatic larvae with gills (such as tadpoles), transforming into air-breathing adults.
Amphibians play major roles in ecosystems by controlling insect populations and serving as food for other animals. They are bioindicators reflecting environmental health due to their permeable skin and dual aquatic-terrestrial life. Amphibian populations worldwide are sensitive to habitat loss, pollution, climate change, and diseases.
Bangladesh hosts diverse amphibian species across its wetlands, forests, and aquatic habitats, contributing to the country’s rich biodiversity and ecological balance.