Related Clues:

• Boxers, derogatorily
• Flat-faced canines
• Snub-nosed dogs
• Ones with faces only a mother could love
• Prize-fighters
• Boxers
• Flat-nosed dogs
• Wrinkly dogs
• Wrinkle-faced dogs
• They slug it out
• Wrinkly-faced pooches
• Dogs with square muzzles
• Curly-tailed dogs
• Wrinkly-faced dogs
• Short-muzzled dogs