Possible Clues:

• A bounder and a hound
• A spaniel; stone in arch
• The dog's a bounder!
• Not the setter - the setter free!
• Barker on a pogo-stick?
• Dog – jumper?
• At the start of a race, the odds double for dog
• Dog bound to be supported by queen
• Type of spaniel in season, mother-to-be essentially
• Betting caller will bring spaniel