Rowan had an antler that stayed in almost perfect shape for over a year. Riff chewed on it after I got him and wore it down a little bit but it was still holding up. Then it got lost. We tried a new one, and I kid you not, Riff demolished it in about half an hour. He chewed it down to a small enough piece that he could've swallowed it (luckily he didn't and I took it away as soon as I realized.) I don't know what type either of them were, deer, elk, etc. Is there much of a difference in durability? I'd like to get them another one but don't want to spend that much money on something that lasts so briefly. I suspect I need to get a bigger size, too, but I thought you guys would know more about the different types than I do!