A personal story comes to mind about dogs in drive. . .I was out running one day and part of my run was through a business park. As I was running I noticed a shop owner across the street exit his shop with a dog and turn around to lock up. While he had his back turned, his rottweiler spotted me and crossed the street. I came to full stop and started calmly talking to him. Dog came up and sniffed, I scratched him behind the ears and waited for his owner to realize the dog wasn't with him. Guy almost had a heart attack when he saw his "guard dog" across the street with a total stranger. I started running again after the dog crossed the street and was back with his owner. No harm, it was just a dog being sociable.