Charming Pet Cube-Eez Hippo 2-in-1 Dog Toy. These corduroy dog fetch toys are made to withstand tough biters thanks to the K9 Tuff Guard technology that features tough denier canvas lining, double stitched seams, and nylon-fused backing. Cube-Eez were designed for dogs that love to tear into their toys so once your pup chomps through the plush outer material, they'll expose the inner, spikey cubed squeaker that's great for bouncing and playing on its own!