Bella is usually pretty quiet at DT, I think she's intimidated by the other dogs, but she drools whenever she goes there. Like, full-on-entire-throat-soaked drooling. I think its just excitement, but she also barks at the instuctor, every single time she comes to take my ticket. Vicki always goes 'Hello, Bella,' and we are working on Vicki being able to pat her, but she barks whenever she starts talking to her, and when she is walking away. What should I do to correct this? I use a check chain on her, because she slips her collar when she doesn't want to go somewhere (to get to the place where we train she has to squeeze through some long grass- last ime I asked her to jump it by pointing and saying jump. now she love to go through it!! She leaps over it like a gazelle. Its the height of my thigh!!) Do you think Bella's barking is out of fear? she wont take treats when she is out, only at home, so I can't get Vicki to feed her treats.... What should I do?