Related Clues:

• Asp or adder
• Clog clearer
• Eden figure
• Cobra or python
• Cobra cousin
• See 16 Down
• River flowing from Yellowstone National Park
• Dastardly sort
• Gem State stream
• Black ___
• ''Anaconda'' menace
• Moccasin without laces?
• Type of critter in five answers in this puzzle
• Chinese zodiac animal
• Reptile