Use crunchy snacks for dogs to change behavior and get him to do what you want him to do when the two of you are out in public.
Things to consider: Gnawing habits, public behavior, and what kind of positive reinforcement to give your dog.
Sticks & Stones - Crunchy snacks from the dog treats bakery are a fantastic alternative to the sticks and rocks some dogs seem drawn to gnawing on. If your dog likes to chew up sticks and chomp on rocks, rather than risk splinters and chipped teeth and the chances of her swallowing heaven knows what when you send her outside to play, give her a few crunchy snacks to munch on.
Public Surprise - Have some crunchy snacks on hand when you are taking your dog to a public dog park. With all those strange dogs and people around, those crunchy snacks can really help you maintain your dog's focus. Moreover, if you happen across a dog that seems less than friendly, tossing her some crunchy snacks (with, of course, her owner's permission) could make you a friend in an instant.
Effective Persuasion - Most dog trainers seem to agree - positive reinforcement is the most effective dog training method. For the best and fastest results using this technique, make sure that within no more than 3 seconds of your dog successfully obeying a command you made, give her some combination of exuberant praise and crunchy snacks.
