Related Clues:

• Sheepdog's target
• Pound pick
• Half-and-half, maybe
• Disney's Tramp, for one
• Purebred's opposite
• Unlikely dog for a registry
• It's far from purebred
• Waif
• Uncollared one
• Leave the path
• Prospective adoptee
• Hardly a purebred
• Jeff's cohort, in comics
• Shelter adoptee
• Dog with no pedigree