Todd Murnan and his dog Big Air Bella perform at the Purina Pro Plan Incredible Dog Challenge in Del Mar, California, June 9, 2012. The premier canine sporting event features dogs competing in a variety of events including dog surfing, dog diving, freestyle flying disc, head-to-head weave poles, Jack Russell hurdle racing and agility. [Photo/Agencies]

Cochiti, a six-year-old Whippet, competes in the diving dog competition during the Purina Pro Plan Incredible Dog Challenge in Del Mar, California June 9, 2012. [Photo/Agencies]