Every year we host Christmas for both families, it's always a lovely day but a bit chaotic. This year my brother who has to travel about 40 minutes but due to sharing custody of his children only stays about 3 hours wants to bring his cockapoo. We don't want the dog in our house, we don't have pets, we have nice flooring we don't want scratching, nice furniture that we don't want to dog jumping on. It's a spoiled dog and not very well trained. My DS who is 13 said he doesn't want it there as it's jumpy and he's not keen. My MIL has had a knee replacement this year and is a bit unsteady still and I think it will cause stress for her as a trip hazard. But how do I tell my brother kindly without coming across as a dog hater.