Related Clues:

• Barnyard beast
• Mule's sire
• Obstinate one
• Long-eared critter
• Caboose's position
• "This tastes like ___!"
• Rump
• Long-eared beast
• Horse's cousin
• It may get paddled
• Mr. Bumble's metaphor for the law
• Zoo animal
• Back end
• Congratulatory slap location, maybe
• Tail end?