Related Clues:

• Playwright keeps old dog
• Playwright takes in old dog
• Playwright giving a home to old dog
• The clue here is 'A sportsman's dog'
• Useful piece of advice you got at the kennels?
• Indication that protein gets broken down
• A dog lead
• A stick for the dog
• An indication of complex protein
• Dog, one of two stars
• Gun dog that indicates position of game
• Dog lead?
• Writer penning old clue
• Tip; dog
• Nothing penned by playwright makes suggestion