Hello, my dog is a 5 month old adopted mixed puppy, I recently adopted him. Whenever he doesn't know what i want from him he offers a sit. The behavior is even reliable. He stays in the sit even when i try to lure him out of it. Therefore, I've been having problems teaching him to stand. I was wondering how can i use this behavior in order to teach him the stay and the stand. Thank you!! Here is a picture of him.