Puppies like wood Just provide him with alternatives, i.e. Kongs, Bully sticks, marrow bones, RMBs, dehydrated tracheas (yep, they're out there), compressed rawhide, etc. With all those goodies, he's not going to want to chew wood.

As always, supervise when chewing. If you can't supervise, don't give him the opportunity to chew anything (example - crate/babygate him).