hello all, Bruce is doing really well on the leash and is finally learning to stay beside me or even follow me.. to avoid our tripping all over each other. But on the way back to the car from our our walk, whether it be in the woods or on the beach, it seems he is so excited to follow the scent back i can't seem to stop him from pulling like crazy. He will stop and sit when I say so, until I move and invite him along.. But he goes right back to trying to pull me along. He's still a little guy (thankfully) but I know I need to curb this behavior before he's taking me for a drag instead of me taking him for a walk. I am thinking I may need a choke chain for starters... He's 5 months maybe 35 pounds.. Is he too small for one? What do I do?