ZippyPaws Burrow Crab 'n Rock with 3 Crabs, Plus 3 Extra Crab Refills ZippyPaws Burrow Crab 'n Rock with 3 Crabs, Plus 3 Extra Crab Refills Use as replacements for any ZippyPaws interactive Burrow toys Also great as stand-alone toys for small dogs Product Dimensions: 7 x 6 x 7 inches Squeaky Plush Hide and Seek Dog Toy