AKC allows three legged dogs to compete in-person in Agility Trials and Fast CAT, which is a 100-yard dash chasing a lure.

But when it comes to Obedience and Rally, AKC only allows tri's to compete virtually. You can send AKC videos of your tri but your tri may not compete in person.

Three legged dogs should be allowed to compete in AKC Obedience and Rally trials in-person.

Action photos credit to Laura Eppig.