Related Clues:

• Drug mule's mother
• Thoroughbred, e.g
• Animal with a sore throat, from the sound of it
• Arabian or Percheron
• Horse that's fired with enthusiasm in a Western?
• Buggy puller
• The Pie in 'National Velvet,' notably
• Heroin that's found in the gym?
• Mare's child
• Derby hopeful
• Mustang, e.g
• Texan's rival
• Arab maybe right about stockings? On the contrary
• Foal, or Chrysler compact
• Surprise winner