I have a 10 month old Female shih tzu. She is wonderful in most ways. The only issue i have is that when we pass other dogs she barks and looks aggressive, strains at the leash to get at the other dog. This is getting worse as time goes on. She only wants to play with the other dog but does not do this in a right manner. She tends to want to jump on them instead of taking it slow. Which in times makes the other dog scared and they both start barking. Please can anyone tell me what i should do.