The Waterdogs are fully aquatic species of salamanders that are paedomorphic. This means that they retain their larval characteristics (gills, etc) throughout their life. They are often mysterious, often living at the bottom of drainages, ponds, and lakes.
Researchers, Craig Guyer, Christopher M. Murray, Henry Bart, Brian I. Crother, Ryan E. Chabarria, Mark A. Bailey, and Khorizon Dunn, have described two new Waterdog species from the southeastern United States. You can read the article here. The two waterdogs were considered to be Gulf Coast Waterdog (Necturus beyeri) but they are physically different than it. Also the researchers suggest changing the name of the Gulf Coast Waterdog to the Western Waterdog.
The first of the new species is the Escambia Waterdog (Necturus mounti). The larvae lacks white spots which differs from the Gulf Coast Waterdog. The adults lack spots on their mandible chin and on the sides of their belly. Their belly is a bright white color as well.
The second of the species is the Apalachicola Waterdog (Necturus moleri). They as well lack white spots on their larvae that differs it from the Gulf Coast Waterdog. The adults have spots on their mandible chin and on the sides of their belly. Their belly is dull white in color. Both of the new species can be found around the Florida – Alabama border.