The dog was pregnant ("She's eating for nine") and Jim gives her a tab of acid as revenge for losing the boxing match. The dog miscarries ("She's not pregnant any more"), resulting in the blood and discharge. Presumably this got wiped over her.
Thankfully I've never witnessed miscarriage and have even less idea of what a dog's might look like. I'd say that's a convincing enough image of dog after aborting a load of puppies. I've just look at that scene again and there's no wound, it's the dog's behind with fake blood all over it, as it's lying away from the camera.
I agree that it's a seriously bloody evil thing to do, as to a much lesser degree was Mike's scheming to get rid of Jim's girlfriend. Mike's right when he says, "We deserve each other".
---------------------------------------------------------
Free your mind and the rest will follow
reply
share