Frog (amphibian)
Frogs are small, tailless amphibians that belong to the order Anura. Used strictly, the term means any member of the family Ranidae (true frogs). More broadly, however, the name frog is often used to distinguish the smooth-skinned, leaping anurans from squat, warty, hopping ones, which are called toads.
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From The Encyclopedia Britannica, on-line resource, Upper Canada District School Board, Virtual Learning Commons