Amber McCune of Bedford has had strong bonds with all her border collies. But her connection with Prove-It, her canine partner with whom she won the top spot in the 2026 Masters Agility Championship at the Westminster Kennel Club Dog Show, is next level. “I am 45 years old and I don't have any children, so he is my child,” she said. Quite literally, McCune took on motherly duties for Prove-It as a puppy, who is a singleton, or only puppy in a litter.