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With long claws, razor-sharp teeth and whip-like tails, the monitor lizard has inspired stories of fire-spitting dragons. Indeed they are the largest lizards to walk the planet. NOVA: Lizard Kings airs Wednesday July, 27 at 7:00 p.m. on KUED Channel 7.

With their acute intelligence, including the ability to plan, the monitor lizard is a very different kind of reptile, blurring the line between reptiles and mammals. And even though these bizarre reptiles haven't changed all that much since the dinosaurs, they are a successful species, versatile at adapting to all kinds of settings.

"Lizard Kings" looks at what makes these tongued reptiles so similar to mammals and what has allowed them to become such unique survivors. But while the creatures can find their way around many different habitats, finding them is no easy task. Natural loners, and always on guard, they sense anything or anyone from hundreds of feet away. NOVA follows expert lizard hunter Dr. Eric Pianka as he tracks the elusive creatures through Australia's heartland with cutting-edge "lizard cam" technology for an unparalleled close encounter with these versatile "living dragons."

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