How do leopard geckos exhibit their natural behavior of burrowing in captivity?

Leopard geckos exhibit their natural behavior of burrowing in captivity by providing them with a substrate that allows them to dig and burrow, such as coconut fiber or sand. This mimics their natural habitat and gives them the opportunity to engage in their instinctual behavior. Additionally, providing hiding spots and tunnels in their enclosure can also encourage them to burrow.