Do frogs have tails?

When most frogs hatch they have a tail. They are called tadpoles or polywogs. As they mature they lose the tail and grow front and back legs. read more

The tailed frogs are two species of frogs in the genus Ascaphus, the only taxon in the family Ascaphidae / æ ˈ s k æ f ɪ d iː /. The "tail" in the name is actually an extension of the male cloaca. The tail is one of two distinctive anatomical features adapting the species to life in fast-flowing streams. read more

However, frogs swim in a breaststroke-like style that is quite different from other animals that take to the water, and the tail is not needed even in frogs that do not venture out of water. At first glance it seems that because of the way frogs move on land they have no tail, and because they have no tail they had to develop an innovative aquatic movement, but we cannot conclusively say that is accurate. read more