Catfish straps unless you are already getting them. I never knew about them until I butchered a deer with a buddy of mine and he showed me. Then I went to show a couple other friends and they knew about them already. Just let it go in one ear and out the other if you already know this but it is new to me within the last couple years. They are on the under side of the loins. Actually they are not bad and they are tender. If you are making jerky with cut meat strips these catfish loins make a more juicy and more tender jerky. You are not going to get 10 pounds worth but before I knew about them I was throwing them away.