A new Colorado law requires health-related research facilities to put test dogs and cats up for adoption before euthanizing them when they're done with their work.

Andrea Quiner walks her dog, Jack, every day in their Thornton neighborhood. She was surprised when Jack recently came home with ticks.

Over the past three years, avian influenza (H5N1) has spread around the U.S. and affected many species of birds and mammals, ...

What’s the greatest threat to Colorado’s elk population? Habitat loss, climate change, chronic wasting disease or wolves? According to many Colorado hunters, the answer is “wolves.” I recently heard ...

A series of devastating wolf attacks occurred over Memorial Day weekend at the Lost Marbles Ranch, Crystal River Ranch and McCabe Ranch, leaving two calves dead and others injured.

The search is on for the Plains Sharp-Tailed Grouse after reports of the bird near Roxborough State Park. Reddit user ...