I have just had a dear friend over for two nights. She has been a friend since we were in year 7 so almost 20 years! She lives two hours away but her and her partner are significantly less well off than we are so we have always travelled to them. This time they agreed to come to us, but without asking us if it was OK they brought their dog with them. It's a small spaniel x type rescue dog and it's very sweet but the complex that we live in doesn't allow pets. When she turned up with it I made a big fuss of it and said how cute it was to avoid embarrassment but on the inside I was freaking out incase we got in trouble for having an animal in our flat. Aibu to think that she should have told me they were planning on bringing the dog. She didn't say anything when they arrived like 'I'm sorry we had to bring the dog I hope that's ok'... Or ask me beforehand.... Perhaps I should have told her our place didn't allow pets but I didn't expect her to bring it without asking... Maybe I'm being unreasonable.