Related Clues:
- See 16 Down
- River flowing from Yellowstone National Park
- Dastardly sort
- Gem State stream
- ''Anaconda'' menace
- Moccasin without laces?
- Type of critter in five answers in this puzzle
- Chinese zodiac animal
- Reptile
- Moccasin, for one
- River through Idaho
- Indy Jones' bugaboo
- Cobra or copperhead
- Caduceus animal
- Sidewinder, e.g.