My U.philbyi, Peanut is healthy and happy. We ended up giving him a dirt substrate that holds phenomenal burrows. My brother's obsession with monitors has encouraged me to step away from what is normally accepted as good husbandry for uromastyx. He has a hot spot reaching temperatures of 170 degrees (surface temperature). His soil allows him to dig down and get to a more humid area like they would in the wild. Here is a quick vid my brother took... Turn off the volume. http://www.youtube.com/watch?v=Tp3HcPfjLyQ&feature=youtu.be
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