The Eyes of Walter are Upon You

Scary, huh? He doesn't lunge at the end of his leash or gnash his teeth at strangers, although he does scamper aimlessly from one scent to another, seeking out something that never seems to be there, something that lingers at the base of every tree, every twig, every blade of grass. He is on the job--Walter, the dog with a snore that can rattle windows and a view of the world like no other, not like two others.