I wish there was a "case-by-case basis" or "it depends" option for hosts's listings on whether or not they are pet-friendly. Like if you wanna bring your cute, well-behaved pomeranian or corgi, my answer would absolutely be yes. but we're talking about an untrained pitbull or some sort of obnoxious, large, untrained dog, my answer would be hellllllll no.
Since I have instant-booking turned on, I can't make sure to inquire about that with the guest beforehand, so I just make my listing "no pets" because I don't wanna take the chance of a guest coming with a dog from hell, who craps all over the rug and floor, etc. However, I know that makes my listing less appealing and that sucks, especially if there are SOME pets that I would welcome!