Kinda heartbroken ya'll. The Fila has EVERYTHING I'm looking for, but it sounds like the potential liabilities are more than I'm willing to take on. I am confident I could handle one, just that my old mother will not be able to. She already knows not to open the door to anyone. That would eliminate the dog getting away from her, because she wouldn't open the door. But, if a Fila will dive right through a glass window, that's a chance I can't take! Pretty down right now, but I know I'm making the right decision by looking at a different breed.