Urodeles are a group of amphibians commonly known as salamanders. These fascinating creatures have a unique appearance, with long bodies and tails, four legs, and smooth, moist skin. In addition to the term urodeles, there are many other synonyms that describe salamanders. Some of these include caudates, newts, and sirens. Caudates are a particularly popular synonym for urodeles, as it refers specifically to salamanders with tails. Newts, on the other hand, are a type of caudate that are semi-aquatic and have a distinct life cycle involving aquatic and terrestrial stages. Sirens, meanwhile, are a type of urodele that have a flattened body and reduced limbs.