Hi there, My lad Marley is gradually getting better at most things but walks are still hard work. He has a head check harness that he tries to get off for the first 5 minutes of a walk but then resigns himself to the fact it is staying on. He still tries to pull and walking to heel is non-existent. We have tried to reward and reinforce good behaviour but he will not take even his favorite treat when out of the house. Vocal praise (positive higher pitched voice etc.) doesn't seem to register either. Has anyone got any tips for rewards on a walk that he might respond to. He seems too exited/distracted to respond to what we have so far.