American flags and blue ribbons lined Mustang Trail Way outside of Herriman High School on Saturday morning. Inside the schoolâs dimly lit auditorium, solemn officers grieved at a memorial service for Unified police dog Dingo, a 7-year-old Belgian Malinois who was shot and killed on July 6. âHe was my fishing buddy, my confidant, my constant companion, my ever loyal partner and my protector,â said Sgt.