Possible Clues:

• Type of horn getting low note on time
• Dog a fool involved in gamble
• Voice deep and legs short
• Dog named for its low stature
• 'The Hound of the Baskervilles', first impression - something worth having
• Wager about a dumb animal being a dog
• Horned hound?
• Low-set hound
• Type of dog serenaded by Elvis on "The Steve Allen Show"
• Hound among beasts