Not trying to change the subject, I have one yella dog that always has some piece of wood a twig,dug up root,up to a 1'' limb or a piece of 2x4 if he can get to, sometimes he'll even chew on a fence post...
Also gotta catahoula that eats poop,. sometimes i think he would rather eat poop than food,I've caught him getting it right from the source!!
.. if you know what I mean...
Some dogs eat poop when they are bored. Had one that started doing it so i ran the piss outta her everynight, she quit when i kept her busy. not that thats the answer but it worked..