Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
I just opened it today, filled it in with my puppy's normal dog biscuits toppes with some peanut butter and he loves it! Sits in his kennel digging for them out. I ordered the size Large, and in case you're wondering I measured about 35-40gr of biscuits fit inside, so not a huge amount (about 20% of my dog's daily intake, 10kg puppy). One last thing - highly recommend searching on YouTube for the how to use the Kong dog toy by the Simpawtico channel.