All my dog love to chew on Nylon Bones. It really helps to keep their teeth clean. I use only the very hard kind. The softer ones can break off into large pieces, and can get lodged in their intestine and x-rays can not see them. This is very dangerous for the dogs, but the hard ones do not break off into these larger pieces. I put the bones in the toy box and by the end of the night there are a half dozen or more on the floor.