@Joyce503 This is just a discussion forum for hosts and guests. And your post has nothing to do with this thread, but maybe you couldn't figure out how to start a new thread.
However there are already several threads running on the topic of pet filters. Just use the search on this site. They did have a pet filter until recently. They stupidly removed it. You need to tell Airbnb customer service directly that as a guest you want the pet filter back. Send them feedback on their Twitter feed.