That is a hard question, Since I know that Boxer and all breeds love to chew up things and eat lots of things that they shouldn't.. Here are my 5 guesses and 1 from my DH
1.parts of toys( eyes, nose, stuffing, sqeekers)
2.paper. Cody and Riley love(d) to shred and eat anything made of paper
3.wood..(pieces of tree branches that fall,! or in Our house the molding around door in sons room <G> )
4.rocks
5.grass or plants. ???? I know all of our dogs eat grass and come in with it still hanging out of their mouths.
Dh thinks its
1. ciggarett butts( ewwwww grosss):eek:
I know Cody just chewed up a scotch tape dispencer.. He's getting more bold and grabbing things off counters at 5 month..Little stinker: I've been worried that he ate some of the sharp parts..