Two men have been arrested on suspicion of animal cruelty after a dog was found buried alive with a nail through its head, police said.
The crossbreed terrier had to be put down by a vet after walkers made the horrific discovery in Kirkleatham Woods in Redcar, Cleveland, England, on Wednesday lunchtime.
They heard a whimpering sound and discovered a mound of earth.
To their horror, they uncovered the white, scruffy long-haired terrier, which was still alive despite the nail sticking through its skull between the eyes.
The couple called the police immediately and rushed the dog to a nearby vet, but there was no choice but to put it down to end its suffering.
The RSPCA is expected to interview two men, who are aged 59 and 60 and from the Redcar area, in connection with the incident.
The charity has released X-ray images showing the nail which was driven into the male dog's skull.