NORTH BEND, Wash. -- Investigators are asking for the public's help locating whoever is responsible for shooting a dog and leaving the paralyzed animal to die off a forest service road east of here.

The 4-year-old Rottweiler was found alive, but was fully paralyzed and had to be euthanized.

People in the area spotted the dog May 31 about 1.8 miles down a service road off Exit 38 from Interstate 90.

The animal was wearing a pinch collar and was tied to a log about 20 feet down an embankment near what officials described as a "popular unofficial recreational shooting area." Several shell casings were found near the dog.

Animal control officers took the animal to a vet where the dog underwent surgery and needed continuous care for four days before being euthanized.

King County Animal Care and Control Interim Manager Nancy McKenney said a necropsy performed last week showed that the dog had been shot several times.

"This is a horrendous and intentional case of animal abuse," McKenney said.

A $12,500 reward is being offered for tips leading to an arrest and conviction. Anyone with information is asked to call 206-296-3939.