Approximately 4,740 species of frogs exist in the world. Frogs are found on all continents except for Antarctica. More than 120 species of frogs have become extinct since 1980. More »

Frogs have bilateral symmetry. Most animals, including humans, have bilateral symmetry. This means that when the animal is cut in half down the middle, two practically identical pieces are produced. However, when cut in ... More »

Frogs are not mammals; they are amphibians. Frogs are cold-blooded creatures that adapt easily to different environments. The creatures reportedly account for over 85 percent of all amphibians in the world. More »

Most frogs are nocturnal, such as the leopard frog and American green tree frog; however, there are species that prefer daytime living, such as dart frogs. Each species is adapted to its preferred diet and environment, a... More »

The poison-dart frog, the common name assigned to over 175 known species of the Dendrobatidae family of frogs, is endemic to the humid, equatorial zones within South and Central America. Habitats range from freshwater la... More »

Most species of frogs can not live in saltwater for an extended period. The Crab-eating frog is one of the only species of frog that lives in saltwater. More »

Nearly all species of frogs have several types of teeth on their upper jaws, while no species of toad has teeth. The two types of teeth frogs have are called vomerine teeth and maxillary teeth. Frogs continue to shed and... More »