Veterinarian Stephanie Wallendorff closes up Blitz's incision after removing fat tissue to use for stem cell treatment Wednesday, Sept. 26, 2012 at Desert View Animal Hospital in Rock Springs, Wyo. Blitz, a 10-year old yellow lab drug detection dog for the Sweetwater County Sheriff’s Department, suffers from arthritis in one of her hind legs. The fat will be used to extract stem cells, which will then be injected back into Blitz to ease the pain from her arthritis. (AP Photo/Casper Star-Tribune, Dan Cepeda)
