Rocky, the just about 2 yo golden “doodle” 65 lb or so says: I will chew my antler sticks and pieces when I feel like it. I like to carry it around and keep it close to me when I’m not deconstructing stuffed animals to get to the squeaker, or carrying my ball. When I am in my crate my antler is with me to help pass the time. Despite my chewing and gnawing, these antlers are pretty tough and have not disappeared! I don’t know how long this will last, my human says she probably bought enough to last me a lifetime whatever that means. She is wondering about shelf life, but so long as it’s not on the shelf I’m happy!