My dog goes absolutely crazy over these.
I had read that they are good for cleaning teeth and containing fibre so I gave them a try but are now well hooked on it for my dog loves them.
It's surprising how many a 200 gram package contains and they keep well. Which is great for you can't give your furs to many of them. Very happy with this after initially getting over the fact that they look like lovely fluffy rabbit ears but after all my dog is not a vegetarian.