K9s Only employee Yvonne Garst helps Cosby, an Alaskan Malamute, walk on a treadmill Friday, May 7, 2010, at the K9s Only facility in Tarzana, Calif. At K9s Only in Los Angeles, you can rent your dog time on a treadmill or sign it up for swimming lessons. (AP Photo/Damian Dovarganes)
