Take some old washcloths or hand towels, soak them in water, lightly wring them out, shape them into something approximating a dog bone and put them in the freezer. Give him one to chew on, but put him on a tile floored area due to melting.
He’s experiencing discomfort from teething, and chewing is a reflexive response for a dog to teething pain. Chewing on the cold, frozen cloth will help.
Thanks. I know what’s causing this. But we’ll have to find a tiled floor. Except for the basement all our floors are carpeted or wood. We have bones and tug toys for chewing galore. But he too often ignores these and goes for whatever he can find.