It may not be a good option for your guys then. The end in the pictures is nice and thick, but the other end has one rim that is pretty thin, and probably won't hold up that well. I've heard people say that the horns are supposed to "flake" as the dog chews, but it looked more like splintering to me.....Rhaegar really isn't an aggressive chewer, and he has had that little one since I brought him home in July, so I don't expect any problems with him. Atlas isn't interested in them, and Mazey has really fragile enamel (three root canals, one extraction, and one tooth capping later, she is NOT allowed to have any hard chews), so I expect the bigger horn will last Rhaegar forever.