mud puppy
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mud puppy
[′məd ‚pəp·ē] (vertebrate zoology)
Any of several American salamanders of the genera Necturus and Proteus making up the family Proteidae; distinguished by having both lungs and gills as an adult.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.