Sounds like Augie: “The world record for the most tennis balls held in the mouth by a dog at one time is five. Augie, a golden retriever owned by the Miller family in Dallas, Texas, USA, successfully gathered and held all five regulation-sized tennis balls on 6 July 2003.”
Sounds like Augie: “The world record for the most tennis balls held in the mouth by a dog at one time is five. Augie, a golden retriever owned by the Miller family in Dallas, Texas, USA, successfully gathered and held all five regulation-sized tennis balls on 6 July 2003.”
http://www.guinnessworldrecords.com/world-records/most-tennis-balls-held-in-the-mouth-dog