Rottweiler (2004)

Even though nobody believes him, Dante (William Miller) maintains he has been imprisoned for a crime he didn't commit. Desperate to reunite with his girlfriend, Ula (Irene Montalà), he takes advantage of a stroke of good luck and escapes his brutal Spanish captors. Once prison guard Borg (Lluís Homar) realizes Dante is gone, he orders the release of a terrifying robotic dog to hunt him down. Dante slowly discovers that an old nemesis (Paul Naschy) is responsible for all his troubles.