Personally I would not put up a "Beware of dog" sign. A gate with STAY OUT in big letters would be my thing. And a couple of female geese, really. Geese guard better then dogs and people are more likely to run away when they see one or two coming (I have two).

 "Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone."

"...I don't like people who talk too much about how everything they do is for the sake of others. It's not true." 

"
The question isn't who is going to let me; it's who is going to stop me?"

     - Ayn Rand