Like most large dogs, Finley — a 5-year-old Golden Retriever from Canandaigua, NY — has a bit of an obsession with tennis balls. But rather than just chasing them across the backyard, this pup has started quite the collection of fuzzy green toys . . . in his mouth. In a hilarious video, Finley's parents showed us how many tennis balls their four-legged friend can carry around, and to be completely honest, I thought he had a giant stick stuck in his mouth at first. Watch until the end to see just how impressive Finley the Golden Retriever is. Talk about a good boy!