You can't compare a death in a horror film to a sad death in a more emotional film though. I don't feel sad when someone in a horror film dies but if it's a serious film and the death of a person is more emotional or based on a true story I would probably feel more sad than if an animal died in a film. Although, I have to say the first time I ever cried during a film was in Project X (not the new one, the one from 80's) where chimps were being tested on, there was one scene with an orang-utan that was so sad