So sometimes when I leave her in her crate or den, and I go upstairs to study, Unagi would bark and whine. I would ignore her until she calms down and then I would come down. This time, she was constantly barking. After a long while, I came down, and she barked at me constantly! Do Shelties get mad? Now she barks here and there, but before she didn't. She would bark at random things now. I did teach her to 'shh' and 'speak', but any tips on how to not have her bark as often?