My shih tzu, Bella, is scared of other dogs. I don't know if it because she is young or what... She is 11 months but a year in December. I her very much and I don't want her to be scared all the time. When she was about 7 months we did puppy preschool to get started on training and behavior. There was other dogs there which was good because then she could get a feel of being around other dogs. When we took her off her leash to play with other dogs, she would just run and hide behind my legs. She also starts shaking when she hears barking or sees dogs. Is that normal? What do I do??