Oh Dag. What am I going to do with you?

So Dag my good little boy has decided that he's a 8 week old puppy again and is chewing on EVERYTHING. Not just his chew bones but the TV trays, the Kitchen table, and lastly tonight at work his collar. Yuppers, his collar was found in his kennel in pieces ( insert very angry mom here). I have NO idea what his problem is, he's exercised, entertained, trained but must chew on something. I've started feeding him in his Cube toy/treat despenser and doing more training with him but OMG if he does not stop my husband might de-tooth him. J/K

Has anyone else experienced a late adolescent chewer?