I've just got an a (quite busy) train and a woman has got on with her spaniel sized dog and let it jump straight up on the seat. I asked her if she thought that was ok and she got a bit arsey and told me that she was going to put a blanket down for it (she hadn't) and that she'd paid for a ticket for the dog, which wasn't really what I was getting at. Was IBU? Is it is ok to have a dog on a seat on public transport?