Fully grown desert iguanas (Dipsosaurus Dorsalis) are typically four to six feet long, although they have been reported to grow up to seven feet, including their tail, which can make up half or more of their body length. Their heads are brown, and their skin blends into a brownish radish pattern, resembling a net. As they mature, their body trunk becomes large, with grayish and tan spots. The blunt-headed albino type may have several dark spots.

Desert iguanas are herbivores and rely on plant matter to survive. They feed on green vegetables, leaves, flowers, and various fruit types, but they're particularly fond of the yellow part of creosotes, which is their most preferred plant. While mostly vegetarian, they occasionally consume insects like beetles and ants for animal protein.

These lizards inhabit arid, sandy, and desert regions, often burrowing in the sand, especially around cactus plants. These areas are typically hot and dry, and life has adapted to conserve water and resist desiccation. They seek refuge among rocks, in abandoned burrows of kangaroo rats, and creosote bushes. They also inhabit deciduous forests and arid-subtropical areas in the southern parts of the world.

Desert iguanas are highly active even in intense heat, often climbing bushes and trees to find cooler temperatures. They are confident and alert and can cross roads with ease, using their powerful hind legs to propel themselves forward when danger is near.