I keep my eyes open at all times when we take Kiki for a walk. If I see a big dog ahead, I cross the street and go to the other side. If they continue to come near us, I always pick Kiki up. We've come across very agressive dogs along our walks and Kiki is usually scared to death. One dog in particular a Jack Russell Terrier, used to go after Kiki's ponytail on her head and another big dog (picked Kiki up by her harness). I don't walk that way anymore.
I don't take chances anymore and I always walk with someone else since I am such a chicken.
Anna
Dog profile for Kiki, a female Yorkshire Terrier