An article about Dogman sightings in Ohio can be found at this link, written by Colin Schneider. The article starts on page 59 of the Centre for Fortean Zoology's journal Animals and Men. I found it to be very well written and a great article overall.
Colin is a paranormal researcher and writes on his blog Paranormal101. He's been writing on it for a few months, and it's one of my favorite blogs to check out. He posts some very interesting stuff regarding cryptozoology and paranormal phenomena, and is currently working on a book on the paranormal aspects of some cryptid sightings.