Man' lizard — a herpetologist explains how it flashes red and blue in seconds to win mates and settle rival showdowns.

The dunes sagebrush lizard, found only in the oil-rich Permian Basin, was classified as endangered two years ago.

When a male fan-throated lizard spots a rival or a potential mate, it unfurls a brilliantly colored structure from its throat that does the talking for it. The story behind that dazzling display ...