BOISE, Idaho — In the search for missing Fruitland boy Michael Vaughan, cadaver dogs hit on a scent in the yard of murder suspect Stacey Wondra...but the dig turned up nothing. I’m senior reporter Roland Beres asking: When there’s no body, just how much weight does cadaver dog evidence carry in a murder case? There’s no question, this is a talented nose. “A dog has 250 to 300 million scent receptor cells. We have about 5 million." says Julie Gibson, President of Mountain States Detection Dogs.