Lithobates, commonly known as the bullfrogs, is a genus of true frogs, of the family Ranidae. The name is derived from Ancient Greek: litho- (stone) and βάτης : bátēs (one that treads), meaning one that treads on rock, or rock climber. As presently defined, it includes many of eastern North America's most familiar aquatic frog species, including the American bullfrog, green frog, and the leopard frogs.

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