But by the time we got there it was just a skeleton with some dog fur covering it.

In the future I will be equipping all my rentals with wheel barrows so the tenants can load them up with hundred dollar bills or furs or liquor or whatever the medium of barter may be to pay their rent.

Given the age of the house, your rafters are probably 2x4s (they'd be the old school actual full size 2x4's, but still too skinny), so you would likely need to add some furring thickness to get up to code R-values. 

I have come across a few people whose names are, Phil Pustejivsky, Kimberlee Frank and Craig Fur.

Part of a larger field of study known as Cluster Analysis, the descriptive names given to neighborhoods included “Furs and Station Wagons”, “Towns and Gowns” (college towns), and “Laptops and Lattes.”

Depending on their appetite fur rusk and principle loss, this might be as low as 5-10%.  

If I'm thinking it right now, you've got about 120' of wall that you are furring out 4"?

It's just a little bit, but it was yet another thing that was probably triggering my allergies in this place (Yes, I'm allergic to everything - anything with fur, most grasses, most trees, all molds....)I've painted the ceilings in the kitchen, hallway and upstairs bathroom.  

Some other alternatives that may exist in your climate would be furring the exterior shell out, Adding a continuous Rockwool insulation shell, and then creating another layer of exterior siding.

No pet deposit but a clause to acknowledge any new damage caused by pet would be paid for by Tenant, like any other leasee, must clean up common areas of pet fur and usual pet clauses.