A Houston-area man was killed in a hunting accident after his dog stepped on a loaded shotgun in the back of a pick-up truck, triggering a blast that pierced the vehicle and the hunter's leg, a local sheriff said.

Perry Price, a 46-year-old math teacher, shot a goose on Saturday then put his gun in the back of the truck where the dog was waiting to retrieve the bird. "I've been in law enforcement 20 years and this is probably the strangest one I've had," said Chambers County Sheriff Joe LaRive.

Investigators found paw prints and mud from the dog, a chocolate Labrador retriever named Arthur, on the shotgun, LaRive said.

Price was taken to a local hospital, but died from a loss of blood after doctors were unable to revive him.