You're walking down the street with your pooch, having a fine time, when a loose dog appears, no owner in sight. Without knowing if this is a four-legged friend or foe, what should you do to keep you -- and your pet -- safe? 1 Read body language. A friendly pooch's ears are relaxed, its mouth is open in a grin and its tail slowly wags in a wide sweeping motion. On the other hand, a "flagging" tail -- like a child waving a flag back and forth -- is a possible sign of aggression, as are stiff, jerky movements; a direct stare; raised lips or growls. Flattened ears and raised hair along the spine...
