The Penn Plax Rhino Skull Aquarium Decoration is a realistic replica of a bone skull. The resin is great for aquariums and reptile habitats, giving a real desert feel to your tank.From the manufacutrer:PENN-PLAX is a family-owned business that was established in 1956 in Brooklyn, New York. Over the years, our goal has remained the same: to enhance the pet ownership experience.We specialize in creating excellent pet supplies for animals, both great and small. We're best known for producing pet products at affordable prices. Our brand is synonymous with innovation and quality, keeping your pet foremost in mind.