really durable she doesn't have as much interest in. She seems to like the process of destroying them. Anything with any give in it whatsoever she will eventually tear apart. There are some we didn't think there was any chance she could tear apart but she found a way.

Also, like some have said, the rawhide stuff is pretty good. I haven't found a system that is very perfect yet. I'm guessing she'll calm down the older she gets but for now it's pretty costly.