Related Clues:

• Famous loser in a 5-Across
• Tortoise taunter
• Wonderland tea party attendee
• Long-gone bird
• Noted race loser
• Symbol of density
• Loser to the tortoise
• Rodentlike mammal
• Fabled braggart
• Long-eared critter
• Erstwhile bird
• Clumsy extinct bird
• Fabled race loser
• Race loser of fable
• Jackrabbit, e.g.