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True frog

The True frogs (of family Ranidae), have the widest distribution of any frog family.

They are abundant throughout the world, excluding Australia and Antarctica. (The only ranid species native to Australia, the Australian wood frog (Rana daemelii), is restricted to the far north.) The true frogs are present in North America, northern South America, Europe, Asia, Madagascar, Africa and from the East Indies to New Guinea.

The true frogs vary greatly in size, ranging from small, such as the Wood Frog (Rana sylvatica), to the largest frog in the world, the Goliath Frog (Conraua goliath).

Many of the true frogs are aquatic or habit close to water.

Most species lay their eggs in the water and go through a tadpole stage.

However, as with most families of frogs, there is large variation of habitat within the family.

Those of the genus Tomopterna are burrowing frogs native to Africa.

They exhibit most of the characteristics common to burrowing frogs around the world.

There are also arboreal species of true frogs.

Typically, true frogs are smooth, moist-skinned frogs, with large, powerful legs and extensively webbed feet.

Note:   The above text is excerpted from the Wikipedia article "True frog", which has been released under the GNU Free Documentation License.
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