The Water Monitor Lizard: Asian, Black Dragon, Flume, Sizes, As A Pet, & More

Water Monitor Lizard in the wild (Caption: The Water Monitor Lizard)

The water monitor is also known by its Latin root, Varanus Salvator. As one of the largest lizards in the world, it can grow to a length of nine feet and reach a weight of one hundred pounds! It is outsized by only two other lizards, the Komodo dragon, and the crocodile monitor. The Komodo can gain more weight than the water monitor, while the crocodile can grow longer – up to twelve feet!

What Does A Water Monitor Look Like?

Water monitor lizard in water

Water monitors are typically grey, with yellow spots and black stripes. They are covered in round scales and their tail is half the length of their body. The water monitor’s preferred habitat consists of tropical areas, mangrove forests, areas of thick vegetation, and bodies of water. The water monitor is more common than other monitor lizards and is also easier to breed.  However, due to its large size and excessive weight, it is one of the more difficult lizards to keep as a pet. Those that are domesticated require large cages with ample living room and precisely adjusted humidity levels.

What Does A Water Monitor Eat?

Due to its size a water monitor needs to be fed on a regular basis (daily). It eats a variety of smaller animals including rodents such as rats and mice. Water monitors are primarily found in Thailand and the Eastern part of the world. In captivity they are known to be aggressive and flighty. They use both their tail, claw, and mouth when fighting. They spend most of their time in the water and are excellent swimmers, hence their name. They are not the most difficult lizard species to breed and lay about 15-20 eggs per batch.

Where In The World Are Water Monitors Located?

Water monitor crawling across sand with tongue sticking out
A water monitor in a dry, arid climate

Water monitors are found in Asia, Sri Lanka, India, Indochina, the Malay Peninsula, and various Malaysian islands. Like all monitor lizards, water monitors are are cold-blooded. They eat insects, crabs, mollusks, snakes, eggs, fish, birds, rodents, and other lizards. They enjoy chasing their prey rather than stalking and ambushing, and their forked tongue is used to smell their prey.

How Fast Are Water Monitors? Can They Swim?

Water monitor lizard crawling across grass from a river bank
A water monitor crawling up onto a bank from a river

Water monitors have strong legs and are able to run fast – faster than the average human. They can also climb very well and will stay in trees to escape predators. Typical hiding places for water monitors include not only trees but burrows and river banks as well. Living up to its name, one of the most impressive characteristics of the water monitor is that it can not only swim but remain underwater for up to half an hour.

How Do Water Monitors Breed And How Long Do They Live?

Water monitors breed rapidly and well. Female monitors lay about 40 eggs a year in two clutches, and eggs are laid about 4 to 6 weeks after breeding. There are about 15 eggs per clutch, and eggs are commonly laid in termite mounds. Males are generally larger, longer, and heavier than females. Water monitors reach maturity in two years and have a lifespan of about 15 years.

Monitors Vs Geckos Vs Chameleons Vs Salamanders & More!

Curious how water monitors relate to other types of reptiles? Check out our reptile section to learn all about the different types of lizards that roam our modern-day planet.

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