Crosby Trying to Communicate
What George found the next day completely blew his mind. In fact, his pooch never looked at the wall while Miller was out - what happened was that, as soon as he would enter the house/room, Crosby would run to the wall as if he was trying to tell him something. The issue was that, although he figured out that his dog was trying to communicate, Miller didn’t have a way to know what Crosby was thinking about.