Why do crested geckos sleep on the ground?

Crested geckos often sleep on the ground because, in their natural habitat, they are primarily nocturnal tree-dwellers that prefer low vegetation and ground cover for safety and camouflage. Sleeping on the ground allows them to avoid potential predators while also being close to their food sources, such as insects that may be on the forest floor. Additionally, this behavior can help them regulate their body temperature and moisture levels during the cooler night hours.