Common Water Monitor

Fascinating facts about the Common Water Monitor

• A typical adult Asian water monitor stays under two metres, yet a Sri Lankan giant stretched to 3.21 m, the longest ever recorded for the species. Most adults weigh around 19.5 kg, but individuals in Sumatra taken for leather averaged just 3.42 kg for males and 3.52 kg for females, showing huge size variation. The biggest captive specimens can top 50 kg.
• Spanning from India's eastern borders to the Philippines, the water monitor thrives in lowland rivers, swamps, mangroves and even city canals, tolerating elevations up to 1,800 m but preferring sites below 1,000 m. Its semi-aquatic nature lets it cross wide water bodies, a trait that fuels its pan-Asian spread. Because it can live in both pristine mangroves and polluted urban waterways.
• A single water monitor can devour anything from fish and frogs to turtles, young crocodiles and even small deer, but its menu also includes human refuse. In central Thailand, stomachs held fish, crabs, turtles, frogs, birds, rodents, domestic cats, dogs, chickens, food scraps and carcasses. On Redang Island, 20 adults were found with mostly human food waste, followed by turtle eggs, crabs and lizard eggs. By scavenging human corpses, they can both aid forensic searches and complicate death investigations, showing how their opportunism blurs the line between wildlife and urban waste processors.
• Breeding runs from April to October, with females laying 10-40 eggs in rotting logs. Once the clutch is laid, the embryos develop for six to seven months before hatching fully independent young. Both sexes become fertile at about 150 cm total length.
• The water monitor fuels a massive global skin trade: between 1998 and 2007, 8.1 million individuals left Southeast Asia for leather markets, and today up to 1.5 million skins are sold each year, with 50,000-120,000 harvested from wild Malaysian populations alone. Despite this pressure, the species remains listed as Least Concern because its broad range and adaptability keep numbers high. These figures expose the paradox of a creature that is both heavily exploited and surprisingly abundant.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the Common Water Monitor

In the sun-drenched wetlands of its native habitats, the common water monitor glides effortlessly, its powerful tail propelling it through the murky waters with a sinuous elegance, as if it were a living embodiment of the primordial forces that shaped this ancient landscape. As it moves, its scaly skin glistens like polished onyx, reflecting the dappled light that filters through the vegetation, and its piercing gaze seems to hold a deep wisdom, honed from centuries of adaptation to this unforgiving yet majestic world. With each deliberate step, the water monitor asserts its dominance, a true monarch of the swampy realms it inhabits.

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