Recently collected specimens document the presence of the Mudpuppy at the mouths of tributaries draining into the tidal Hudson River in Columbia and Greene Counties, NY. In this study, we summarize historic records of Mudpuppy from the Hudson River. Examination of these records, Mudpuppy distribution elsewhere, and the distribution of riverine New York reptiles leads us to conclude that Mudpuppy should be considered native to the Hudson Valley.