fox snake

noun
  1. a brown-blotched nonvenomous snake, Elaphe vulpina, of north-central U.S., that vibrates its tail and emits a pungent odor when disturbed.

Origin of fox snake

First recorded in 1855–60; apparently so called from its reddish color
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018