Sometimes top quality food is really top quality junk, I'm sure there's someone on here that can post a food comparison chart so you can see just what foods are good. I wouldn't let a ferret chew on a bone, they could choke or get too big of a piece and get a blockage. They have lots of special treats for ferrets, giving one daily is probably good. Make sure you give lax daily and probably ferretone for vitamins. You can also feed a straight meat diet, making up your own food. Also, you can try duck soup, most ferrets, but mine, seem to like it.