Just wondering.... sometimes when I get a marrow bone there is a LOT of fat on it. I have been cutting most of it off. I figured a lot of fat isn't good for a dog. Is that right or wrong? I leave some on it, but some bones have a whole bunch on it.... also.... most of the marrow bones I get at the grocery stores are just round slices, kinda like little tires. Is that how most of the marrow bones look that you guys get? Thanks for any replies..