I use this grinder to grind up chicken leg quarters for my 120 lb German Shepard. I need to cut up the leg quarters into 2 or 3 pieces to make them fit into feed tube. The machine handles them fine. My problem is that the picture of grinder shows a forward and reverse lever. the machine I got, is only forward. I understand that there is an updated model and the picture may be it but my guess is that they sent me the old model.