The Arizona Sonoran Desert Museum is home to a very unique reptile. 🦎 The museum has studied this population of Spiny-Tailed Iguanas for decades. They appear to be using the artificial rocks as hibernacula during winter, which maintain warmer temperatures compared to fully-wild burrows and allows the species to flourish without spreading into the wider desert. #spinytailediguana #ctenosaura #tucsonaz #iguana | Exotics Keeper