As far as being able to purchase another home, you will need to confer to a lender.

While some breeds may have a genetic predisposition to certain kinds of aggression (towards other dogs, or in defense of their owners, for example), how the dog owner manages their dog and the individual temperament of the dog matter more than the breed.  

From a legal aspect, if something occurs such as fire, injury or worse, you have no legal defense.

Playing great financial defense with my bills.

If their lawyer thinks the charges are excessive or invalid they may present that in their defense on the court date.

Though, there are usually hoops a tenant must jump though in order to do this in a defensible manner.In states that allow this it this, it often takes the form of:The heater (or whatever) goes out and the landlord isn't addressing the issue in a timely manner.The tenant gets fed up, and fixes it himself (or hires it out) and then deducts that amount plus incidentals from his rent.Then the tenant writes a letter to the landlord explaining that he's deducted from rent and why he has done so. 

If its covered under your policy, then the defense costs are paid by the insurance company.

Outer moat (first line of defense), is positive cash flow.

@Dan ButlerA couple years back I attended a conference with some of the people from LAUNCH Chattanooga.http://www.launchchattanooga.org/They are doing some great programs where business owners get involved training, mentoring and investing in entrepreneurs in their community.

Are the defense costs included (do the policy limits erode through payment of defense costs or not)?