I was at 8 dogs at one time, all setup in beautiful chain spots well cared for behind a 6 ft fence and theft was in the back of my mind all the time, all APBTs and their protector was and still is (I have only 2 dogs now) my lab. LOL, a lab that can walk through DA dog's chainspots and kick them out of their houses and eat your hand off. Had only one bulldog ever get into with her, she is the ruler of the house. Dog is so smart she should be human seriousily. Their is a Jedi mind trick in dogs, seriousily there is (not exactly but close) and the force was very strong in this one. 11 years and still kicking hard. The best protector for a dog is a dog, IMO.
I was looking at cameras that played real time about a 10 sec. delay, about $1500 for one and you can hook it into your internet and watch them at work, I was really wanting to do that but money got tight with the economy.