competed at the National Finals of the Purina Incredible Dog Challenge at Purina Farms near St. Louis. More than 30 canine athletes jumped, vaulted and dove their way into the records books as they competed in Olympic style events, including Agility, Jack Russell Hurdle Racing, 60 Weave Pole, Freestyle Flying Disc and the crowd favorite - Dog Diving. Greg Louganis competed with his dog, Dobby, in the Small Dog Agility event. ... "Greg Louganis" dogs Purina "dock diving" agility sports ...