If it is nylon, you can bet that it can actually resist chewing a lot better than rubber, although there are certain rubber compounds that are really tough. (mypetneedsthat.com)
Drink Diet Colas and Chew Lots of Gum — There are still those who argue that diet colas prevent fat loss. (leangainsguide.com)
Barkworthies Chicken Vittles Dog Chews Lot Code: 1254T1 Size: 16 oz. (centralvets.com)