Are you afraid of big dogs?

I am not afraid of big dogs, I am afraid of little dogs and I have five little yappers! I am afraid of little dogs, because I ran into a loose one when I was a kid. I was walking to school and he darted across the street and started to chase me. I just stood still, because I thought that if I ran he would nip at me. Instead that dog just came up to me and bit my leg. I guess I was in his territory.
Now, I have had a Pitbull and a Rottweiler. I loved both of them very much. They were gentle giants. I am not afraid of large dogs, because I have only had good experiences with them.