The Exo terra canopy cave provides a multi-level habitat for tree-dwelling reptiles and amphibians who are often reluctant to use ground-level caves for hiding or nesting. a proper hiding area is an essential feature of a natural terrarium. Without a safe spot to hide and sleep, reptiles and amphibians will easily develop stress that will affect their activity and appetite. Stressed reptiles can retreat to this elevated and secure hide-out and regain their strength. when filled with Exo terra's forest moss, the canopy cave is very suitable as a moist nesting hideaway for tree-dwelling reptiles and amphibians to deposit their eggs. A convenient clip system allows you to remove the hide and check your pet or its eggs without compromising its nesting behavior. a static cling is included to cover the spy hole and darken the interior of the cave to give your reptile privacy and prevent stress. the Spy hole allows you to check your animals or their eggs without disturbing them by simply detaching the upper 1/3 of the static cling, taking a peek and then restoring it to its original position.