Finally, the perfect pet that won't piddle on your floor or shed on your couch. Our rocks love venturing on a journey to destinations far and wide. Rocks may vary slightly by size and color. Each playset includes a good luck mini Trex dinosaur, fleece pelt, club and adoption certificate. Each rock is specifically selected for their compatibility with humans. This wild child of the fish belli rock types is a little more rambunctious than some other breeds of rocks.