Three near-identical U.S. lizards have kept their identities for millions of years in a way that researchers compare to the ...

Side-blotched lizards probably don’t call the game that, but they play a version of it anyway. A new study explains the ...

From three morphs to one: Across 220 populations, the pattern is consistent: where "Hulk" arrives, yellow and orange throat ...

A newly evolved, aggressive “Hulk” wall lizard is spreading out from the Rome region — and researchers are watching a million-year stable system unravel in real time. From three morphs to one: Across ...

A study appearing in Behavioral Ecology shows that in male wall lizards, certain behaviors have a greater influence on the way they resolve territorial disputes than their size and coloration. While ...