These throwbacks to the prehistoric age live in the bushes and undergrowth of the Kaeng Krachan National Park, frequently emerging to bask in the sunshine and unintentionally pose for photos.
They also can be found in populated areas and although not usually aggressive, they are not to be approached, especially in mating season!
The average adult is between 1.5 to 2 metres long, and the really big specimens can measure up to a huge 3 metres in length!
The nickname monitor lizard in Thai is ‘hia’. Good to know, but use it with caution. It’s also one of the rudest names you can call a Thai person so be careful how you announce your trip to the park!