The Lava Lizard is a common name for several species in the genus Microlophus that are endemic to the Galápagos Islands, with each major island typically hosting its own distinct species—a striking example of the archipelago's isolated evolution, similar to Darwin's finches. These small, agile reptiles display notable sexual dimorphism, with males generally larger and more boldly patterned in grays, browns, and blacks, while females are often smaller and can display splashes of red or orange, particularly around the throat and head, especially during breeding season. Lava Lizards are highly territorial, and males are frequently seen performing distinctive push-up and head-bobbing displays atop rocks to assert dominance and ward off rivals, a behavior that also helps regulate their body temperature by exposing more surface area to the sun. They're opportunistic feeders, primarily preying on insects and other invertebrates, but will also eat plant matter and, occasionally, smaller lizards. Found across a wide range of habitats from arid lowlands to coastal areas, Lava Lizards are among the most frequently encountered reptiles in the Galápagos, often seen darting across trails or basking on lava rocks, which helps them blend seamlessly into their volcanic surroundings.
