Frogs are amphibians, formerly referred to as Salientia (Latin meaning to jump). Most frogs are characterized by a short body, webbed digits (fingers or toes), protruding eyes and the absence of a tail. Frogs are widely known as exceptional jumpers, and many of the anatomical characteristics of frogs, particularly their long, powerful legs, are adaptations to improve jumping performance.
The distribution of frogs ranges from tropic to subarctic regions, but most species are found in tropical rainforests. Consisting of more than 5,000 species described, they are among the most diverse groups of vertebrates. However, populations of certain frog species are declining significantly.
Many frogs contain mild toxins that make them unpalatable to potential predators. Many predators of frogs have adapted to tolerate high levels of these poisons. Others, including humans, may be severely affected.
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