Can dogs sense ghosts?

With senses far sharper than ours, dogs detect what we can't--perhaps more than we realize. Dogs have an extraordinary sense of smell and hearing. Is it enough to perceive things from the great beyond? Breakthroughs, discoveries, and DIY tips sent every weekday. M arc Eaton, a professor of sociology at Ripon College remembers talking to a paranormal investigator who had recently lost his father.