This just happened to me this past weekend and I'm still very upset about it! A man made a last minute Instant Booking (literally 7pm same day) for one guest. He then shows up about an hour later with not only another guest but also carrying a dog in a front pack on his chest. They were already in my house (which my son and myself occupy) when I noticed the dog and right away the lady that was with him blurted out "oh we have a dog, it's a support animal, it's hypoallergenic"...
Needless to say I was not at all happy for this last minute surprise nor did I believe their bs about it being a service animal. But knowing there wasn't anything I could do, I didn't say anything. Well as the night went on, the came to my kitchen and started cooking up a meal, i then noticed they had lids to my dishes with left over food on my dining room wood floor, obviously for this dog to be pushing around the floor licking on. I then saw the dog just running around the place doing whatever so I warned that I have a mean kitty that will most likely attack the dog if she sees it. They then took the dog in the guest bedroom, and within minutes it was in there scratching at the door wanting out. I bit my tongue. Later after everyone was asleep I got up and noticed that same lid with spaghetti sauce still on it all the way down the hall and in front of the guest bedroom door. I was furious. This was not a service animal! So not only did this guest bring another unnamed guest, but brought their pet, didn't remove shoes at the door which I clearly have listed and posted, then started cooking breakfast at the very last minute before check out time, so they were here almost an hour past my noon check out time, even though I reminded him it was almost time to check out at 1145. After they left and I cleaned the room I of course found tons of dog hair in every corner of the room in the comforter, on the chair, and the throw rug at the end of the bed was filthy.
I myself have no dogs because I don't want to clean up hair, dander, mud, poop... have damage from scratching and chewing and "urine marking". So it's infuriating for someone to come into my home for a night, not mention the animal, lie about the real intention of the animal, and let it run amuck in my home.
I am unhappy about the whole thing but especially the supposed support animal scam. Why do we in this country have to register and license for almost every little thing we do in life, but these people don't have to register their "emotional" support animals?! Airbnb needs to make some changes!