Hey there, I have some great info for you, hopefully all you'll need to know. I also love these beautiful, not too common lizards. Okay, they prefer an arid set-up with plenty of open space to move. This is very important to keep them healthy. They do like to burrow so provide a deep layer of substrate and to better accomodate their need to dig add some small pieces of pvc buried half-way into the substrate.. The overall temperature should be in the mid 80's with a basking area that is around 95 degrees, and lower the temperature at night by 10-15 degrees. Be sure that they always have access to fresh, clean water. Their diet should consist of 90% crickets dusted once a week with a good multivitamin, a few newly molted mealworms, and very occasionally waxworms. Some will take plant matter such as sweet ripe fruits and tender greens and be sure that if these items are not consumed daily to discard leftovers, but continue to offer them at least twice a week. These reptiles are monogamous and so they are best suited to one mate for life not several. Good luck with your new pet. Julie. And please do not use aspen. While it may be okay for other reptiles there is no need to use it with Leiolepis lizards, a simple mixture of peat and sand will suffice. They are not messy and it will be very easy to maintain a natural substrate. Again, good luck!