I know it’s hard for animal lovers to believe, but not everyone likes animals. Some people have allergies, some have had a bad experience, and some just aren’t animal people.
That’s why if there are pets on the premises, it’s important to make sure guests are aware of that before they book. Some will be delighted by this. Others will want to find alternate accommodations. Don’t assume they’ll love Fido and Whiskers just because you do :).