Our dog Ein, who is about 5 months old, has stopped walking on his leash. We were doing pretty good the first week we had him. Then he started pulling, so our trainer suggested a harness, which Ein didn't like. I took him out for one walk with the harness with barely any problems. The second time, he just layed on the grass and wouldn't move. When I would get to his level to coax him, I'd praise him and then keep going. The third time he wouldn't move, so, I switched back to his collar. But, all he will do is lay down. I've been trying to walk him in the morning before I go to work, otherwise he is alone until my husband comes home for lunch. Any ideas on how to get him walking again? Even treats don't seem to be enough to coax him to move. He will only move if I head towards the house.