I have basically just started the raw paleo, and got my hands on some local farm beef. Unfortunately, one of the parts i got is simply unchewable; I cannot even bite through to put a smaller piece into my mouth. Should I just avoid these animal parts in general? I mean, if my teeth aren't designed to consume it, it doesn't make sense to me that I should then cut it up with a knife into bite sized pieces, but rather find the meats that I could naturaly consume without any tools. Can I get any thoughts about this?