"On the plus side, it took my 18-week-old puppy a lot longer to get all the frozen peanut butter out of the grooves on this than it normally takes him on a regular Kong.
On the very very down side, however, that same 18-week-old puppy was able to tear off pieces of the rubber on his very first encounter with the toy.
Bottom line: a great idea, but a weaker toy than the regular Kongs. Wish they made it in the extreme-strength black rubber!"