Smurf is a big, strong boy who approaches everything with way more enthusiasm than is necessary but he is also sweet natured and cuddly.
He walks nicely past all the other dogs when we are out and about but he becomes challenging when he sees other dogs running off lead and he wants to join in. He needs a strong, active person/family to take him home.
Once he is away from kennels and a daily adventure becomes the norm, he will learn to relax.