In this Aug. 25, 2013, photo, Abby, a yellow Labrador retriever, returns a tennis ball thrown by owner Dominic Ryder at the ninth annual dog swim at Fairfax Park Pool in Eau Claire, Wis. The event is held following the pool's closing to people for the season. Proceeds benefit a new off-leash dog park. (AP Photo/Eau Claire Leader-Telegram, Stacy Silverberg)