Hi! My GSD, Keeli, is 8 years old. She knew the basic commands since she was a pup and I recently taught her some new tricks like, play dead, circle, do a figure 8 through my legs, etc. but I was hoping I could teach her to walk by my side and heel when we're walking on a leash. She likes to walk ahead of me and stuff and I don't want her to do that. She will occasionally pull but other than that, she is calm. She stays pretty well too, I tell her to sit and I put the leash down, tell her to stay and walk away. Then I tell her to come and she'll run towards me. Another thing she does is sometimes, when I tell her to do something on a walk, she ignore me and look away. Not even looking at anything. Then I try to get her attention, she still won't look at me. Its very frustrating. Anyway, my question is, is it possible to teach an 8 year old GSD to walk beside me and heel? And why does she sometimes not want to look at me? Thanks!