I would be scared too. I'm a big dog lover and I grew up with Chows, but the other day there was a dog loose in my front yard and I was scared to approach it. I finally walked outside because I wanted to see if it had tags on it. The dog turned out to be really friendly, but I remember how scared I was when I was walking up to it especially since I'd never seen him before. Luckily after a few mintues his owner found him playing with me in my yard.