Mojo, a Davis County Sheriff's police dog, gets gold crowns on his canines at Summit Dental in Layton Thursday, Sept. 1, 2011. Mojo, a 4-year-old a Dutch Shepherd, developed the bad habit of chewing on metal, which eroded his teeth. He received four gold crowns on his canines and a root canal at the dentist. (Erin Hooley/Standard-Examiner)