To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
My 4 month old puppy licked at these for a bit and within a few minutes had ripped the whole corner off one of them (at first attempt). If your dog is... well... a dog then they probably won't last very long. Expected something a lot stronger.