Do you have a provision in your lease either prohibiting cats or charging a pet rent or fees?

I said ok to small pets.

It rented for the $1,195 (+ $55 pet fee). 

Then $350 for a pet deposit that is not refundable, really more of a fee.

Are there any industry pet peeves or unspoken rules of the trade?

Tenants are ok with some pet staining, water marks, etc.

Very important.4) Do they have Pets?

For example, I tell all of my tenants before they move in that my major pet peeves are a dirty kitchen, noise at night and rent paid after the first.

.-1 unit occupied (seller knows the tenant), 1 unit vacant- Seller and Tenant are family, no leases-Tenant has a pet and is month to month-Agent said they didn't have disclosures yet, I put in a offer same day and it was accepted then he gave disclosure same day.

. $10k in damages.Situation B (pet liability): Tenant's dog bites a passerby on the sidewalk.