Liolaemus lavillai, also known as Lavilla's Liolaemus, is a vulnerable lizard native to the arid Atacama Desert of northern Chile, measuring 6 to 10 cm in length and exhibiting remarkable adaptations to extreme temperatures and rocky habitats. This insectivorous species practices ovoviviparity, giving birth to live young, and plays a crucial role in its ecosystem by helping control insect populations.