Just a few examples:The best application screening, hands downFree evictions and up to a month of lost rentUp to $5,000 in accidental pet damageProfessional inspection reports with high-res, 360-degree photographs twice a yearProfessional statements, monthly and annualAnd much more.

So I don't want to turn this into an argument of whether or not someone should allow pets in their STR.  

She says due to her fixed income she can't pay $100 more but she also has no where else to go that will take her pets so she is going to be homeless if I kick her out.

I have a pet-friendly home that currently has a tenant that has been residing in it for a month and a half (she does not have any pets) and is complaining that her allergies and asthma are being affected.

Write off anyone who has young kids or pets who could drown unless you have a legit pool fence around it and even then... liability.As much as I LOVE pools, I think the liability and maintenance costs outweigh the marketability of a home with a pool for an investment scenario. 

BackgroundThey left behind a lot of pet damage, completely destroyed the grass, tons of missing items and didn't clean much before they left.

The duplex is a fairly nice 3b/3ba within walk/bike distance to Bay Area Rapid Transit (BART) with tenants on a month to month lease at pretty much market rate (also they have pets if that means anything at all re: stability). 

I allow pets in my rentals, however make sure you charge a pet fee and have it written into the lease. 

@Luis Martinez I take down info on small things in the beginning when starting the lease like pets names or children's names.

I thought I read an article once which stated that a "whole house" arsenic treatment was required by FHA for all  water in the house, as well as any drinking water for pets or livestock.