Was half asleep and do not have a lot of info on this film.
I believe that it was a french film with english subtitles.
It is about an older couple married and just hate each other. He is a drunk and so is she.  He raises animals of some sort and she is always threatening to kill them and serve him the food unknowingly.  In the end I believe they both either serve each other poisoned food or wine and they both end up dead, I think?  HELP ME!!!!!