I'm not sure if a Pet Fee would ever work in some countries.
Some friends are currently staying in an ABB for the weekend in a rural area of New Zealand, messaged the Host beforehand and asked if the dog one of them was looking after whilst it's owner was away elsewhere in New Zealand could come and stay to and the Host happily agreed to allowing the dog to stay.
Win ,win all around.
Different strokes for different folks and each country to their own thanks.
BTW, Go and stay in Nepal, Thailand etc and the likes and dogs are everywhere roaming the streets , and they love their animals.
Any dog loving ABB user would love a holiday in those countries.
Don't suggest you ever venture there @Andrew2236 because perhaps it may not be for you !!
Maybe you could re word your Listing as one's own approach to these situations can make all the difference.
For some people, their pets are their children they may not have been able to have or are their to provide companionship due to a bereavement, help them with coping with bullying etc so it pays to keep an open mind all around.
All the best