The Chameleon-Like Monitor Lizards

Varanus mcraei, commonly known as The Blue Monitor, primarily uses its tail for balance and agility rather than for any significant prehensile purposes. While they are known to be good climbers and may curl or wrap their tails around branches for stability, their tails are not considered truly prehensile like those of chameleons that use their tails extensively for grasping objects while climbing.Varanus mcraei can curl their tails for support while navigating their environment, but they do not have a prehensile tail in the same way chameleons do. 

Similarly, Varanus prasinus, The Emerald Monitor, do the same.