@Mindy Jensen I think one of the worst, was when a tenant moved out, we went to do move out and turn the home, found a dead dog in a cardboard box in the garage.During a routine inspection, on a tenant with no pets; a room full of spiders and snakes.

The Rabbu revenue by amenity analysis suggests allowing pets in Snowshoe, WV (a market I'm familiar with) adds an average of $328k/yr to the average property. 

This contains all your qualifications, income = 3 x monthly rent, no evictions, no credit issues, no co-signers, no pets, no smoking or whatever your requirements are.  

In this case all pets will likely have pet rent.

The apartment smells horrible due to the tenant allowing her pets to urinate all over the place.

I have stayed away from renting to a pet owner in the past, but I feel like more and more people have pets.

Airbnb will release more money sooner if you pay for the privelage to get your money.Airbnb has no place to collect pet fees either.

After living in it for a year, you can move out and rent the entire property without having to refinance it.The only legal document you'll need is the lease agreement and applicable addendum (pets, roommate rules, etc.).Go to the BiggerPockets bookstore and buy "Set For Life" by Scott Trench and "House Hacking" by Craig Curelop.

I do a $300 non refundable pet fee for one pet

The good part of this is that WE get to decide what is accidental and what was caused by negligence (if they break the terms of our rental agreement by having pets, smoking, having a party, etc.)