There are several synonyms that can be used instead of the term "dwarf siren". Some of these synonyms include lesser siren, pygmy siren, and dwarf aquatic siren. All of these terms refer to a type of small, freshwater salamander that is native to North America. The dwarf siren is a particularly interesting amphibian due to its unique adaptations for surviving in its aquatic habitat. Despite its small size, the dwarf siren is known for its ability to emit a loud, piercing siren-like call when threatened. Overall, these synonyms provide a meaningful alternative for describing this fascinating species of salamander.