Because frogs are amphibians, they have adaptations that help them live on land and in water. They are cold blooded, which means that their body temperatures change with that of the environment. While they are most commonly found in warm, humid places, they also inhabit dry deserts and cold mountain climates.
Frogs start their lives as aquatic tadpoles with gills to breathe. As tadpoles grow into frogs, lungs replace the gills and allow frogs to breathe on land. Frogs' skin is covered by a layer of slime that dissolves oxygen from air and water. Numerous blood vessels present in frogs' thin skin absorb the oxygen.
Frogs have webbed feet, which help them to swim. Their long hind limbs, which help them to leap on land, also aid them in swimming.
Frogs' eyes and nostrils are positioned high on their heads, which keeps them out of water when frogs swim on the surface. Frogs have a sensitive area on their backs that helps them to sense vibrations through water. Frogs, which have a mottled appearance, can change color to merge with their surroundings.