Be aware of the people who try to sneak in a pet as a service animal, emotional support animal or companion animal pretending to have a qualified disability or pretending the animal is a qualified to provide a necessary function related to their disability.

Unfortunately you're responsible for the SOW.To address your problem you should definitely read the companion book on estimating rehab costs. 

I know this is as easy as buying a vest and ID card for your dog these days.I found an interesting article here on this subject:  https://www.american-apartment-owners-association.org/property-management/latest-news/pet-policies-vs-companion-animals/Anyway, looking ahead I suspect this tenant is going to try to play this card on us somehow to get out of paying the monthly pet fee.  

I am not saying that inside pet owners are necessarily responsible, but outside only pet owners almost always are, as they don't see the animal as a companion but as an object like a shovel or a lawnmower, just something for their use (I am not referring to genuine working dogs here like herders or sheepdog).

Not sure if it still works but you used to be able to get the southwest cards (both visas and or personal/biz) and rack up the points to get companion pass.

You must accept any type of pet if it is a Service or comfort/companion animal with no deposit collected.

I do not leave the house without them & my constant companion laptop.

Make sure you get the companion books also THE BOOK ON FLIPPING HOUSES & THE BOOK ON ESTIMATING REHAB COSTS (copied from @Brandon Turner best books to read pdf)

Your blow-hard companion may not fit the bill but I've noticed that more mature investors are just naturally more skeptical of future growth outside the metro.  

I understand the comfort of a companion animal, but if you're making the claim, you should have to have something to back it up!!