Purina Pro Plan Performance Team trainers put on a high-flying show during The Purina Pro Plan Canine Combine, on Wednesday, Jan. 30, 2013 in New Orleans, LA. (Photo by Cheryl Gerber/Invision for Purina Pro Plan/AP Images)

Associated Press
Purina Pro Plan Performance Team trainers put on a high-flying show during The Purina Pro Plan Canine Combine, on Wednesday, Jan. 30, 2013 in New Orleans, LA.  (Photo by Cheryl Gerber/Invision for Purina Pro Plan/AP Images)
Purina Pro Plan Performance Team trainers put on a high-flying show during The Purina Pro Plan Canine Combine, on Wednesday, Jan. 30, 2013 in New Orleans, LA. (Photo by Cheryl Gerber/Invision for Purina Pro Plan/AP Images)
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