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The Natural History and Captive Care of the Mertens’ Water Monitor – Part 2

Merten’s MonitorPlease see Part 1 of this article for information about the natural history of the Mertens’ Water Monitor, Varanus mertensi, including the threat posed by introduced Marine Toads, Rhinella marinus.

Cage Size and Style

Mertens’ Water Monitors may be the ideal choice for folks interested in keeping larger monitors, but who lack the room for the true giants.  Averaging 3.5 feet in length, they are supremely-adapted predators, hunting equally well on land or in the water.  I’ve found that their alertness and aggression when hunting rivals that of any monitor I’ve observed, including the famed Komodo Dragon (keep your fingers out of their cage at feeding time!).  Read More »

The Natural History and Captive Care of the Mertens’ Water Monitor – Part 1

Varanus mertensiMany lizard-keepers find Mertens’ Monitors, Varanus mertensi, to possess an ideal mix of large and small monitor qualities.  While large enough to satisfy the desires of aspiring Crocodile Monitor keepers, they can be comfortable in sizable, but less than room-sized, enclosures.

Description

Mertens’ Water Monitor (not to be confused with the larger Water Monitor, V. salvator – please see photo) is the most thoroughly aquatic Varanid and has a number of specialized adaptations for life in the water.  The tail is laterally compressed (as in Crocodiles) to assist in swimming and the nostrils, which can be sealed during dives, are located high on the snout.  Read More »

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