Related Clues:

• No Triple Crown winner ever
• Stud farm mother
• Barnyard mom
• Charley ___
• Derby entry
• Animal ridden in polo
• Animal that's often ridden
• Something swallowed in the nursery rhyme
• ''The Old Gray ___''
• "ld Gray"one
• Neigh sayer?
• Scary suffix with "night"
• "Giddyap!" animal
• Stagecoach team member
• Lady trotter