There’s always more to do, more to zoo at Utah’s Hogle Zoo. Our Animal Highlight Days are species-focused celebration days that give you extra chances to learn about your favorite animals, discover how Hogle Zoo is supporting a world where people and wildlife thrive, and how you can become a champion for wildlife.

Saturday, January 10, 2026
Established in 2024 by The Living Desert Zoo and Gardens, World Desert Day aims to raise awareness, inspire action, and foster appreciation for the world’s desert ecosystems and the communities, plants, and wildlife that depend on them.
Although people generally think of deserts as hot places, some desert ecosystems have colder climates. The two desert types differ not only in temperature but also in precipitation, vegetation, and wildlife. In Utah, the Great Basin Desert, which covers roughly the western half of the state, is cold, while the Mojave Desert, in the state’s far southwestern corner, is hot. Despite their differences, both desert ecosystems are fragile and home to unique species that have adapted to survive in these extreme environments.
Did you know: Utah is home to diverse landscapes, including wetlands, forests, and about 80% of the state is desert.
World Desert Day reminds us that deserts are not barren landscapes, but thriving ecosystems full of resilient animals. Because desert wildlife is vulnerable to extreme temperatures, many desert mammals and reptiles are crepuscular (active only during twilight – e.g., dusk and/or dawn) or nocturnal (active only during the night). This allows them to conserve the water and energy that they receive from the little food available in these harsh environments. Some desert animals, such as the Mojave Desert tortoise and the Gila monster, avoid the harsh conditions by burrowing underground, where temperatures are considerably cooler.
Did you know: The secretive Gila monster is Utah’s official state reptile and one of only two venomous lizards in North America. Gila monsters’ bold and colorful patterns are a warning sign to predators that they are venomous. See and learn about Gila monsters in our Small Animal Building.
Both the Mojave Desert tortoise and the Gila monster are classified as Utah Species of Greatest Conservation Need. They occur in the state’s southwestern corner, where they face several threats, including drought, wildfires, habitat loss, and human activity. In this region, development is rapidly encroaching on their fragile desert habitats.
“Primary threats to the Mojave Desert tortoise include habitat degradation, loss of habitat, extreme drought, wildfires, predation, disease, and human-related mortality. Tortoises have declined roughly 50% since the Utah Division of Wildlife Resources began long-term monitoring in 1998. We are working with our agency partners to actively manage tortoise populations and help recover tortoise populations in southwest Utah.” – Ann McLuckie: wildlife biologist, Utah Division of Wildlife Resources
Did you know: Desert tortoises can store up to 40% of their body weight in water in their bladders, to be absorbed as needed. They get most of the water they need from the food they eat. See and learn about Mojave Desert tortoises in the Aline W. Skaggs Wild Utah habitat.
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