Frog zoology - Locomotion - Encyclopedia II

Frogs have saltatory locomotion. This means that their primary method of locomotion is by hopping, jumping, or leaping. The front legs of a frog are similar to the arms of humans. They are weak and of little use for jumping. However, the frog has hind legs which are especially designed for leaping. These legs contain a tibiofibula (shinbone), femur, and the astragalus and calcaneus (similar to a human's ankle and heel bones). Adult frogs move about on land by hopping with their powerful hind legs.

Tadpoles, which have not yet developed arms or legs, use their tails to undulate like a fish (such as the perch).

Adapted from the Wikipedia article "Locomotion", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki/Main_Page