Bled all over linens, let kids rub slime into carpets, stabbed coach with a knife. 

(Carpet vs LVP etc).

The wear and tear on hardwood floor - carpets has no recourse beyond the deposit damage if there is pee or replacement costs needed.

Carpet, flooring, paint, fixtures, landscaping.

Hows the overall condition of the property > If the appraisal is marked subject to it won't be able to go conventional or DSCR It needs flooring (bad carpet) painting and there is a hole in the side of a fiberglass tub.

He found out the carpet smelled so badly with the dog pee and wood floor was also damaged by the dogs after they moved out. 

We had to replace all of the carpets with wood, costing us over $5K.

Make sure you get a "Release Fee" on each property; this is an amount that is to be paid to release a property as collateral in the event you need to sell, or if you have an insurance loss that insurance proceeds will be applied to the subject property and not to the whole loan keeping you stuck with an encumbered damaged property, remember they don't make construction loans as a second and the blanket loan won't subordinate (usually) to another lender, it could get messy, so have a release fee stated and understand how payments will be applied.A line of credit is not a blanket mortgage but a line of credit can use other collateral, different animal and it may or may not fit you needs.

Would the house still smell from the cats even if there is no carpet???

If this tenant can't afford the $100 increase, I will have to travel back and spend the time and money getting the house ready for a new tenant (paint, carpets, etc) , not to mention decide whether I will hire a company to deal with the rental and the new tenant, which could mean 10% of monthly rent or I will have to deal with it long distance myself and hope for the best.