musk turtle

any of a family (Kinosternidae) of small, aquatic turtles having a heavy, musky scent; esp., any of a genus (Sternotherus) found in E North America

See musk turtle in American Heritage Dictionary 4

noun
Any of several small freshwater turtles of the genus Sternotherus of the eastern United States and Canada, which emit a musky odor when disturbed.
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