Saint Lucian Whiptail (Cnemidophorus vanzoi) is listed as Critically Endangered on the basis that this species effectively represents a single, severely fragmented population, and is at continual risk from the possible introduction of invasive mammals to any or all of the four small islands where the species presently survives, which would lead to a projected decline in the number of mature individuals. Its overall area of occupancy is likely to be below 1 km2, but 4 km2 is used based on the recommended 2×2 km2 grid size. Continued conservation management, population monitoring and invasive species control are needed to guarantee the species persistence.
Available at: https://www.iucnredlist.org/species/4997/115071448