Dangerous dog roaming loose. I was walking up the steps of the restaurant to see if it was open. There was a full size White Pyrenees at the top of the steps. They are usually friendly dogs. This one growled and lunged at me. I had to backpedal so quickly that I almost flipped over backwards down the stairs which most likely would have broken things. Pyrenees are a protectorate breed bred to fight and kill wolves and bears. Their jaw strength exceeds a pit bull. They could kill a child and most adults instantly.