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Arca

Asian water monitor

Varanus salvator

Conservation status IUCN: Least concern· LC
Asian water monitor (Varanus salvator)
Photo: Carlos Delgado · CC BY-SA 4.0 · File page · Wikipedia article (it)

— Where the name comes from

Salvator means “saviour”, and not even taxonomists can say for certain why Laurenti chose it in 1768: perhaps for a reputation that these animals had saved somebody by signalling danger — once again the idea of the sentinel lizard. It is the second heaviest land reptile in the world after the Komodo dragon, and it lives in cities.

— Facts

Group
Reptiles · Reptilia
Order
Squamates
Habitat
Mangroves, rivers, urban canals, rice fields, coastal forest
Range
From Sri Lanka to Indonesia and the Philippines
Size
1.5–2.5 m, up to 3 m; 20–25 kg
Diet
Fish, crabs, birds, rodents, carrion, refuse
Lifespan
15 years

— Characteristics

  • 01

    It swims in canals and crosses arms of sea between islands.

  • 02

    It escapes by climbing trees, even as an adult.

  • 03

    Its forked tongue lets it taste the air the way snakes do.

— What sets it apart

There are hundreds of them inside Lumphini Park in central Bangkok, and the city has made its peace with them: they are the canals’ carcass-disposal service. Every so often, when they get too numerous, the authorities move a few dozen to protected areas, with press conferences and arguments. It is one of very few large predators to have colonised a metropolis without being exterminated, and the reason is that they do a useful job and bother nobody.

Next species

Argentine black and white tegu

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Salvator merianae