Researchers have found a new species in the Smaug genus, named for the deadly dragon in J.R.R. Tolkien's The Hobbit.

City lizards can handle heat, research finds. "It's kind of like a hidden superpower that only presents itself in the right environment."

Is your outdoor cat a wildlife-killer? "We found that house cats have a two- to 10-time larger impact on wildlife than wild predators—a striking effect."

When combined with DNA identification, dogs trained to sniff out the scat of endangered lizards could offer a new noninvasive way to protect them.

What on earth do the world's largest lizards, Komodo dragons, need protection from? New research on their hidden armor provides the answer.

Stress doesn't stop male fence lizards from trying to look sexy, research finds.

Lizards whose ancestors went through stressful times may better cope with stress. Could the same be true for humans?

High-speed footage of a gecko darting between trees in a flooded area amazed scientists, who then investigated in the lab.

Lizards that hid from predators by blending in have quickly adapted new strategies to survive invasive fire ants.