Lost Dog near Montalvin, San Pablo, California, United States

Lost 16-year-old Chihuahua/terrier mix named Cookie in the Montalvin area of San Pablo. Dog has a black head with tan and white markings over the eyes and muzzle, large upright ears, a white neck and underbody, and black patches on its back and flank. Dog is around 6 pounds, docile, food motivated, and slightly deaf.