Something interesting I found
I was searching for info on the possible sequel to Grizzly and I found this. There's no way to know if it's true but it is interesting.
David Sheldon, a busy writer-director-producer, most recently produced and directed a new motion picture, "The Legend of Dark Mountain" which was screened at the Cannes Film Festival in May. He co-authored the screenplay "Predator: The Concert" which stars George Clooney, Charlie Sheen, Laura Dern, Louise Fletcher, Deborah Raffin and John Rhys-Davies. He has written, directed and/or produced twelve feature films and is also active in television.
http://www.amazon.com/When-Knew-Al-Untold-Pacino/dp/1891799371
The Slaughter House's Horror Pit
http://thehorrorpit.proboards58.com/index.cgi?