When young, they live in water as tadpoles. As they mature, they grow legs, but their gills and tail disappear. They also develop lungs, allowing them to breathe air and spend most of their time on land. Frogs resemble toads, but there are essential differences. Frogs have smooth, wet skin, while a toad's skin is dry and bumpy.
Frogs have tiny teeth, but toads are toothless.
Frogs have longer hind legs than toads. Frogs jump, toads hop. Frogs lay their eggs singly or in clumps, while toads lay long strings of eggs. Because they eat a variety of insects, spiders and worms, frogs help control destructive insects. However, scientists are concerned that frogs are decreasing and are beginning to study them more carefully.