Cujo - Shaggy terrier dog owned the Chief of Police Jack Mannion on the police drama THE DISTRICT/CBS.2000-2004. Cujo lived with the Chief onboard a restored tugboat called The Betty-O berthed at the Washington Channel Marina, Slip 38. The tenacious but soft-hearted Jack Mannion adopted Cujo when he feared the dog was to be sent to the pound. Cujo is played by a dog named Deeogee (pronounced Dee-o-Gee).