Possible Clues:

• Pedigree registry letters
• Real-life ''Best in Show'' org.
• Boxer's org.
• Org. that created Responsible Dog Ownership Day
• Dog lovers' org.
• Canine registry org.
• Dog breeder's assn.
• Org. overseeing boxers
• Pedigreed org.?
• Org. that registers boxers