I just got my puppy about a week ago, and things are going great. Potty training is coming along fine, I've been teaching him basic manners and he walks good on a leash for a puppy his age. Every time he pulls we stop until he sits and the leash is loose. My problem is, when I take him out of the house he never wants to leave. He freezes and whines. I've been calling him, and crouching down to his level, but today and half of yesterday is hasn't been working, and I've had to tug him a little. I hated doing it. Is this something he'll grow out of? once he's out of eye site of the house he's fine.