I bought it on a whim when stopped to get fish food this afternoon (the red elbow). So far it has him a little stumped- he's worked it like he does his to get stuff out of the top of his Kong, and has also rolled it across the floor like his treat ball. But it's held his interest for over a half hour at a time.
https://www.premier.com/store/Produc...x?cid=3&pid=86
https://www.premier.com/store/Produc...x?cid=3&pid=86