Do you mean consumable bones or recreational bones? Femurs (weight bearing bones) are usually recreational and are too hard to eat and some hard chewers can break teeth on them but femurs have fatty marrow inside (be careful if he’s not used to eating fat) that has calories of course. I find that beef rib bones last a long time since they are too hard to eat for my small dogs and mine also like Merrick GI Bones. Kroger has started carrying small pork marrow bones sometimes. For consumable bones, I’ll give mine pork ribs and chicken parts including feet, duck necks, turkey necks. Merrick also carries raw turkey necks but it’s probably cheaper to get them at the grocery store. If they eat a whole neck or chicken leg, then I just give them some treats the rest of the day. They’ll still get one meal if they get a pork rib bone. I use “food” as treats (freeze dried raw nibletts, freeze dried liver or other meat). I weigh me dogs once a month and adjust accordingly. I usually give a RMB 3 times a week to eat otherwise, they chew on the gnawing bones anytime.
