I gave Mya a knuckle bone..she ate the good stuff off the outside and then just kinda gave up on it. I started putting peanut butter in the top where the marrow was and on one side where there's a hole and she works on it for a little bit. Is there other ways to make it more appetizing again for her? I don't want to throw it out as it's still got lots of life in it and it would be a waste just to buy them so she can eat the outside and leave it. Looking for some good ideas to get more life out of it.