According to Goode, some rattlesnakes, like the western diamondback, actually den in groups of up to 10 to 20 individuals or even among other reptiles such as Gila monsters and desert tortoises.

Even Gila monsters need a chance to cool off from Arizona's brutal summer heat. One of Arizona's famous venomous lizards was ...

It's not every day that you see an 8-foot-long Gila monster lounging beside a city street. And if the critter happens to be reading a book, well, that's bound to catch your attention. The literary ...

Bolg would have been a bit of a monster to our eyes. "Three feet tip to tail, maybe even bigger than that, depending on the length of the tail and torso," said Woolley.

A 76-million-year-old species, Bolg amondol, was discovered in Utah. The raccoon-sized monstersaur is a precursor to modern Gila monsters, researchers say. This discovery sheds light on Utah's ...

Co-author Professor Randy Irmis, of the University of Utah, said: "Discovering a new species of lizard that is an ancestor of modern Gila monsters is pretty cool in and of itself, but what's ...

“Discovering a new species of lizard that is an ancestor of modern Gila monsters is pretty cool in and of itself, but what's particularly exciting is what it tells us about the unique ...

A container of bones at the Natural History Museum of Utah that sat in storage for 20 years has now led to the discovery of an extinct “monster,” in the latest reminder that museum collections ...