AITA for wanting to snitch on my Roomate’s dog??

My roomate just recently decided they want to foster a dog from an animal shelter that was going to be euthenized. The dog is a 10 year old pitbull. The problem is the dog is too much for us to handle and frankly I don’t want to live with it. To start off the dog can’t control its bladder, it keeps peeing in the house. It even peed on the couch today and when I asked my roomate if they were going to clean it up, they said “it’s going to dry out.” The dog also slobbers everywhere, like on the couch, the floor, on you. If you are eating food the dog will literally beg for some, like I mean sit there and bark at you for your food. If you are eating on the couch they will try to jump on you to get to your plate. You can’t watch a movie without the dog jumping onto the couch and getting all over you. We tried to put the dog in a crate last night (since they pee randomly) and it wouldn’t stop whining last night for 2 hours. The dog will whine and bark so loudly when left alone or in the crate that you can hear it from outside and I’m worried our neighbors can hear since we live in an apartment.

Now to some other info. My roomate lied about the dog’s breed because our apartment complex doesn’t allow pitbulls, they also had the shelter lie about the dog’s breed on the paperwork too. I want to call the landlord and inform them that the dog violates the leasing agreement my roomate signed. We plan on having a conversation with our roomate but honestly idk how they’re going to react. Would i be an asshole if I go behind their back and snitch.