Word Origin & History. moniker 1849, said to be originally a hobo term (but attested in London underclass from 1851), of uncertain origin; perhaps from monk (monks and nuns take new names with their vows, and early 19c. British tramps referred to themselves as in the monkery).
northern American bull frog (female) Frogs, toads, and salamanders belong to a class of animals called Amphibians. They are vertebrates (back-boned animals) with smooth (moist) or warty skins. They lay unshelled eggs, usually in water, and most species have a gilled, swimming larval stage (such as a tadpole).
Strange and Secretive. A caecilian (seh-SILL-yen ) looks like a cross between an eel and an earthworm, but it is really an amphibianA cold-blooded animal that lives both on land and in water and is able to breathe through its skin as well as, or instead of, through its lungs. Frogs and salamanders are amphibians. like frogs and salamanders.