I have to agree on those "knuckles"--or sterilized bones. I have 3 golden retrievers, and I always have them on hand for whenever they get in the mood to chew. After the newness wears off--they don't seem to demolish them as fast. I get the white ones-not the basted ones. I made the mistake of getting the basted ones once--and the dogs threw them up. I also agree--chewing the bones does wonders for their teeth.
daisy