Frogs are found on every continent except Antarctica. They live in ponds, rivers, forest, and fields. Some even live in sand dunes. The biggest, the Goliath frog Africa, is as heavy as a newborn baby. One of the smallest, the gold frog from South America, could sit on the tip your little finger. But, big or small, frogs are always easy to recognize. Almost all have long back legs, a large head, big eyes, damp stretchy skin, and no tails. Frogs are amphibians, which means they lead "two lives" in water and on land. Many live near ponds and swamps, like this growling grass frog from australia.About half of a frog's bones are in its feet, which can wiggle and grip things almost like hands. These wonderful feet help frogs climb, dig, swim, and even hang upside down.
Some people are confused about the difference between a frog and a toad, but you do not have to be. A toad is just a kind of frog. It usually has drier skin than other frogs and can live farther from water. It also has shorter legs, so it hops rather than jumps. Toads can live a long time. A pet toad in England was famous for living for thirty six years. A bullfrog, by comparison, may live for about twenty years in captivity.
