I spotted this Monitor lizard in Khao Sam Roi Yot National Park Thailand, whilst on my way to Tham Phraya Nakhon Cave. I got a few photos to add to My Thailand photo collection, but once I got too close it retreated back under the concrete slab, which you see in the photo below.
Monitor lizards are quite widespread throughout Thailand and South East Asia. In Thailand all Monitor lizards are protected, places you might see Monitor lizards in Thailand include the National Parks such as Khao Yai. Lumphini Public Park in Bangkok has a few resident Monitor lizards which have become accustomed to Humans and they can be easily viewed. Don’t be surprised if you a monitor lizard crossing the road, they are commonly seen in built up areas, even the sprawling metropolis of Pattaya has resident monitor lizards.
Monitor lizards can grow up to 9 feet long but will more commonly reach lengths of 5 or 6 feet. They may live as long as 15 years, they are territorial and may become aggressive if encroached upon.