What would you do if you woke up and your housemates had put a goose in the backyard?

Well, this happened to me this morning! I'm not kidding. I am dead serious! I went to use the back door this morning to let my terrier out; and lo and behold, there was a goose standing there honking or quacking or whatever a goose does. I know it's a pet because they have filled a small play pool with water for it and I have since seen my housemate put it in the shed. They didn't mention they were getting a goose. Is it normal for me to be upset or am I overreacting? I haven't spoken to them about it yet because, frankly, I don't know what to say, 'Hey, where did the goose come from?' or 'I see we have a new addition to the household'. I know, you are probably laughing on the floor right now but, they are getting freakier and freakier! I honestly am considering moving but my credit is shot from huge student loan payments and struggling after a divorce. The stupid part is that the housemate was yelling and banging around in the kitchen last week because she was sick of getting my pet's fur all over her, even though my cat has been recovering from having a tumour removed. Nevertheless, out of courtesy (or fear), I've have had my pets locked in the bedroom thinking they can always go out in the backyard to play and get exercise, but then this goose thing happens. My housemates, I have found out, seem to be lack compion for others and are starting to seem quite narcissistic, and a bit like lunatics, to say the least. It's just too weird for me. In addition, they got an international student in here claiming that we, including me, would help teach him English, but I never agreed to that! It seems they have managed to scam him out of $8,000 saying they would teach him English, but they haven't been doing so and probably have no intention to. What would you do or say? Or would you try to 'work it out'? I keep getting into these crazy and uncomfortable sitations, and I just don't have a good judge of character initially. I just want a quiet, decent home where there is privacy and space. Any thoughts or advice on this bizarre situation would be appreciated. Thank you.