Dinosaurs ruled the earth for more then 140 million years and are considered to be the ancestors of today’s reptiles. The Exo Terra Dinosaur Eggs add a prehistoric accent to your terrarium and provide a multilevel hide-out. The Exo Terra Dinosaur Eggs provide a shelter with multiple entrances for easy access and allow you to create a cool, moist microclimate within the terrarium. This fossil hide-out offers a safe spot to hide and sleep, while the moist microclimate will support thermo-regulation and hydration, and aid the natural shedding process of reptiles.