Betsy, a seven-year-old English Bulldog, rides a wave during the surfing competition of the Purina Incredible Dog Challenge in San Diego, California, in this Purina handout taken June 8, 2012. This canine sporting event features 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]

Deb Spoonhour and her dog Kona, a six-year-old Shepherd mix, are hit by a wave during the surfing competition of the Purina Incredible Dog Challenge in San Diego, California, in this Purina handout taken June 8, 2012. This canine sporting event features 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]