Over the last month, two of Colorado’s latest gray wolf transplants were killed after crossing the border into Wyoming.

After being delayed a day, Colorado Parks and Wildlife published the April wolf activity map that shows extensive travel from ...

Gov. Jared Polis signs bipartisan bill requiring medical research facilities to adopt dogs and cats before euthanizing them.

The designation of the state mushroom came at no cost to the state. Colorado has a state bird, animal, tree, fish, flower, fossil and now a state mushroom. Gov. Jared Polis signed a bill Monday ...

From now on, dogs and cats that are subjects to scientific research in Colorado will be valued for their service and given ...

Whether we like it or not, animals are being tested for medical purposes in Colorado. When the testing has been completed on ...

A Colorado dog rescue was forced to shut down and surrender all its animals after the state suspended its license. Investigators said the group failed to isolate sick and possibly rabid puppies ...

A new Colorado law is guaranteeing animals used as test subjects in health-related research a second chance at life before ...

The state has emerged as a leader in building ... a law creating a cash fund for the department to use for animal crossings. Colorado has also evaluated its highways to create a priority list ...

"This legislation reflects who we are in Colorado — a state that values science and innovation, but also leads with empathy," added Lt. Governor Dianne Primavera. "These animals play an ...