Nile Monitor

The Nile monitor (or Varanus niloticus) is a large species of reptile that lives in the non-desert area of Sub-Saharan Africa, and prefer environments close to water. They have also been introduced to the USA – specifically California and Florida – where they are regarded as an invasive species. It is also known as the African small-grain lizard, guana, water leguaan or river leguaan. Adult nile monitors tend to be brown to green, with dark stripes on their body and yellow spots on their legs and head. Meanwhile, juveniles are black with bright yellow spots. They grow between 1.2m and 2.2m long, growing throughout their lives. Weight ranges from 0.8kg to 15kg, with great variation across size and environmental factors. Males tend to be larger and heavier than females.

Due to its wide distribution across sub-Saharan Africa and adaptability to a range of habitats, the Nile monitor is considered a species of Least Concern. However, local populations face increasing conservation struggles from habitat conversion and overharvesting for their skins. Wetland drainage and human expansion destroy critical nesting and foraging areas. Their reliance on specific microhabitats for burrowing and nesting make them susceptible to long-term decline if habitat degradation continues. The Nile monitor is not a focus of conservation efforts in most regions, though some countries include them in wildlife protection laws, and international trade is restricted under CITES Appendix II; but legislation is not often enforced, and data collection is minimal. They benefit, however, from general habitat restoration initiatives that include them as part of the natural biodiversity. In regions where Nile monitors are invasive, i.e. Florida, management includes trapping and public reporting systems to control populations and protect native species.