When choosing a 3D reptile background, make sure to choose one that resembles a real rock wall in Australia. Not only is this a unique and attractive background, but it also helps to regulate the temperature of your cold-blooded pets. Its high-detail and realistic look will provide a more natural habitat for your animals. The Australian backgrounds from Universal Rocks are molded from specific locations in Australia. Because of the quality and detail of each piece, they are not available in any other size.