The mega den, also known as Prairie Rattlesnake rookery, is said to have as many as 2,000 rattlesnakes and is located in an ...

The moose is the largest animal in Colorado, weighing up to 1,200 pounds and standing up to 6 feet high at the shoulder. Male moose also have antlers, which can cause serious damage if you are rammed.

COLORADO, USA — A "mega den" of rattlesnakes in Colorado is becoming active after the long winter. Thanks to a livestream, scientists studying the den on a craggy hillside in Colorado are ...