We may earn a commission from links on this page. An ancient species of monitor lizard that went extinct some 34 million years ago had four eyes, according to new research. It’s the first time ...

Scientists say they’ve found evidence of a fourth eye in the fossil skulls of extinct monitor lizards — an ocular abundance found in no other known jawed vertebrate. The discovery, published ...

About 50 million years ago, a monitor lizard in what is now Wyoming perceived the world through four eyes. Saniwa ensidens is the only known jawed vertebrate to have had two eyelike photosensory ...

Imagine facing a predator and, instead of running, you suddenly squirt blood from your eyes as a defense. It sounds like a plot twist from a fantasy novel, but for the Texas horned lizard ...

But these lizards are most famous for their unusual defense mechanism: When threatened, they squirt a stream of blood from their eyes up to a distance of 5 feet (1.5 meters). They do this by ...

This week Krister Smith, a palaeontologist at the Senckenberg Research Institute, in Germany, reports in Current Biology that, 49m years ago, the four-eye club had another member—a lizard called ...

The lizard is also known for its unusual defence mechanism. "Under really extreme stress they can actually shoot blood from the corners of their eyes and it's up to a distance of about one metre ...