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I got this as it looked like a fun game for my 4 month old puppy. It WAS fun, and my puppy solved it in 5 minutes! The problem is that the pieces that hide the treats are easy to lift up - BUT a danger to chew on. What puppy won't chew on those bits too? The "bone" pieces hiding the treats have sharp edges, and within a minute of chewing on them there was blood on the floor! DO NOT BUY UNLESS YOU CAN LITERALLY TAKE EACH PIECE AWAY AS THE DOG UNCOVERS THE TREAT! Further bad news - the tray under the treats is lightweight and can be chewed on as well. Again it's got sharp edges.