We would like to have Airbnb collect pet fees at the time of booking (once the number of pets is determined). For example, the reservation could itemize 2 Adults, 2 Children, 2 dogs for 3 nights. If we charge $20/night/dog they would collect $120 for the pets (which is not taxable btw!).
Currently, we have to request our pet fees through the Resolution Center (as mentioned, above), which worked out fine until AirBnb allowed partial payments for reservations (as of Dec 2017)!!
Now we have to come up with a system to request the pet fee 2 weeks before the guest arrives. This is tedious and problematic for a host with a busy rental! I like the suggestion to let us know when the guest has paid so we can request our Pet fee from the Resolution Center.