Dogs of Hell (1982) 
Dogs of Hell (AKA: Rottweiler) is about a pack of rottweilers who have been bred and trained to be vicious killers by the U.S. military, who then escape after the truck transporting them crashes outside of a small town. It is then left up to the town's sheriff and his deputies to see off the lethal canine threat whilst the townsfolk panic, run around, and become appetising snacks for the marauding rottweilers.
Obviously, the film-makers thought that on paper Dogs of hell wasn't entertaining or gimmicky enough, as they then decided that this film would make a good 3D experience - which can be seen in some of the shots where things are intentionally prodded, pushed, and thrown towards the camera lens. Unfortunately, whilst this may have won over some of the theatre-going fans of the time, it comes across as very forced and silly when watching at home, and doesn't really add much to what is essentially a very mediocre and stilted film.
Originally posted here:
Nightmare USA Films Discussion Thread