i have a 1.5 year old lab. who never got into chewing.... thank god[8D]. there can be a few reasons your dog can have this behavior, one may be a lack of attention, or possibly the dog is hyper, and needs to be excerzied daily, or worked harder. in any case, not all of us have the time to walk our dogs every day like we usualy would like, so a chew toy, or something to keep the dog occupied would be nice. what you could also look into would be a cream they have that comes in a tube its called "bitter apple". a relative of mine had a lab that loved to chew on table legs, and wood in the house or on the porch. the owner baught this cream, and applied it to the furniture, and the dog stoped bitting house furniture, and became more obiedient in the house. from what i saw the cream was very bitter, and left a bad taste in the dogs mouth. it didnt take long before the dog stoped chewing in the house. good luck