Related Clues:

• Tracks relentlessly
• Mutts
• Boxers, for example
• Pointers, say
• Fala et al.
• Bedevils
• Follows relentlessly
• Dalmatians and dobermans
• Feet, so to speak
• Lady and the Tramp, e.g.
• Setters and pointers
• Labs and boxers
• Pugs and pekes
• Boxers and bloodhounds
• Beagles and bassets