Variances are a-whole-nother animal.

Did you meet the animal?   

(Making judgements based on family status, number of kids, medical animals, etc etc..)4) When you get that first repair call 10pm Saturday night for a leaking roof or water heater do you have a trusted/dependable guy to call and get it fixed that night?

As long as you are screening the tenants/animals well and conducting inspections, I think you'll be fine.

We have late fees, pet fees (though less these days with the whole service animal abuse), parking fees in some cases, storage unit feeds, coin laundry revenue etc... it can add up.Good luck.

I always charge fees for animals so it's money in my pocket.I occasionally waive the fee for a fish tank, depending on the quality of renter.

Let them do something about it as the ESA rules are not intended to accommodate misbehaved or vicious animals. 

I have still walked in on people and animals who are either hiding (afraid I am there to bust someone) or just hear very poorly.

Regarding verifying living in the dorms, I've never done that, but I also have nicer houses that cost a smidge more and require cosigners, so that weeds out the party animals for the most part.  

The veterinarian may list the dominant breed on the animal's records.The dominant breed is typically the one the dog most closely resembles. #12 is the best example.