Hey everyone I’m new here. We have decided to welcome an ACD to our home tomorrow and we are very excited and up for any challenges that may come up! I attached a photo I’m curious if you guys think this is a full ACD. Any tips? We do have a 5 and 3 year old I’m a little worried about him biting their heels. I owned a shepherd years and years ago and I remember he would do this on walks etc. is this something they grow out of or is trainable to not do? My shepherd stopped after 4-5 months or so.