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.

Technically, they fall into the category of “unregulated wildlife.” That makes them, in the words of the law, legal to own, ...

Colorado governor Jared Polis signs bills to protect animals, including wild horses and bison, and allows pets in public ...

The seventh wolf reintroduced to Colorado has died.

A symbol of the West and vital sustenance for Native Americans who lived on the western Plains, the bison was hunted to near ...

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

A female gray wolf was reported dead in northwest Colorado this week, becoming at least the seventh of the state’s ...

A symbol of the West and vital sustenance for Native Americans who lived on the western Plains, the bison was hunted to near ...

Colorado lawmakers introduced over 650 bills in the 2025 legislative session. Among those that passed were several that will ...

The Project RattleCam livestream, made possible by a collaboration between scientists from California Polytechnic State ...