If they are bones with lots of cartilage on them,, frozen is fine but the harder bones fed frozen just enhance the chances of a broken tooth. We fed them frozen also a few years ago but changed our minds after hearing of broken teeth from them.
But many folks feed them frozen and have never had a problem, but we figured what the heck, why take a chance. RB Ray & Pat Burgett Eaglecap Bernese Talee,Lexi,,Bell, Shadow & Max www.goodbernerfood.com http://users.eoni.com/~eaglecap/ Draminski Ovulation Detector Rep