Wow, I'd forgotten "Devil Dog: Hound From Hell!", but that one's a keeper!:
The "scary" image of the Devil Dog with what looks like a muff of turkey feathers glued around his neck
Woof, you liked that one quite a bit more than me. On a good day I'd give it two slimes out of four. The tried and true method of gluing stuff onto something (as has been done to lizards quite a few times to create "dinosaurs") looked just awful. Although, probably a better ending than just having Richard Crenna wrestle with a regular dog - but they could have had him back the devil dog into one of the electrical turbines by using a silver crucifix.