A distinction between frogs and toads is not made in scientific taxonomy, but is common in popular culture. Toad is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands.
See also: Cane toad, Toad (software), Toad (Nintendo), Cane toads in Australia, Toad of Toad Hall, and Theory of a Deadman.