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document June 5, 2026

Colorado Wolves Comment Letter

Conservation organizations submitted comments in response to the U.S. Fish and Wildlife Service’s request for information on the implementation of the Endangered Species Act 10(j) rule for gray wolves in…
Remote camera image of a wolf pups taken during the summer of 2025. (Courtesy of Colorado Parks and Wildlife)
Article May 7, 2026

Colorado’s Wolf Pups are Leading the Species’ Recovery. The Government Wants to Undermine It

A comment period backed by anti-wolf groups hopes to derail the state’s effort to restore wolves to their historic habitat.
As the gray wolf’s reintroduction has illustrated, healthy ecosystems are interconnected, holistic entities requiring rich biodiversity, including the presence of apex predators such as wolves.
(National Park Service Photo)
Press Release December 18, 2025

Earthjustice Responds to House Vote to Strip Gray Wolves of Endangered Species Act Protections

Legislation puts gray wolf recovery in jeopardy and defies science
A gray wolf runs after being released on public lands by the Colorado Parks and Wildlife Commission on December 19, 2023. (Jerry Neal / CPW)
Press Release October 22, 2025

Legal Organizations: Colorado on Solid Footing to Release Wolves from Canada

10(j) rule identified one possible source of wolves, not a mandated population
A gray wolf walking in snow taken in Yellowstone National Park. (Stan Tekiela / Getty Images)
Article April 29, 2026

How Trump and Congress Are Attacking the Endangered Species Act – and What You Can Do

Extractive industries that have long despised the ESA now have powerful allies. We’re fighting back.
A wolf at Yellowstone National Park. (Jacob W. Frank / National Park Service)
Update April 2, 2026

We Won Back Endangered Species Act Protections the First Trump Admin Attacked

The ruling derails the current administration’s efforts to further undermine the landmark conservation law.
A lone wolf howls across hills and valleys in the upper Midwest. (Jerry & Barb Jividen / Getty Images)
Press Release January 8, 2025

Colorado Rejects Livestock Industry Attempt to Stop Wolf Reintroduction

Livestock groups’ concerns and requested management changes were already addressed
A gray wolf howls in the woods of the the upper Midwest. (Jerry & Barb Jividen / Getty Images)
Press Release December 18, 2024

On Anniversary of Reintroduction, Colorado Urged to Proceed with 2025 Wolf Releases

Conservation groups ask Colorado Parks and Wildlife Commission to reject livestock industry petition
Press Release October 29, 2020

Gray Wolf Stripped of Federal Protections

Fish and Wildlife Service removes the gray wolf from the Endangered Species Act, halting wolf recovery
Press Release March 25, 2025

Endangered Species Coalition Responds to Republican-led Congressional Attacks on Endangered Species Act and Gray Wolves

Groups express wide opposition to proposed legislation
A wolf howls on glacial erratic in Little America Flats, Yellowstone National Park. (Jim Peaco / NPS)
feature October 2, 2015

The Endangered Species Act Under Fire

The success and significance of the Endangered Species Act, and Earthjustice’s efforts to safeguard the visionary law from impending threats in Congress, in a discussion with Legislative Counsel Marjorie Mulhall…
A wolf in the Firehole area of Yellowstone National Park.
(Jim Peaco / National Park Service)
From the Experts March 17, 2022

A New Vision for Wolf Conservation After 150 Years of Yellowstone

Emergency protections are needed for the gray wolf after the Northern Rockies sees the worst persecution of wolves in a century.
The Mexican gray wolf is the most genetically distinct lineage of wolves in the Western Hemisphere and one of the most endangered mammals in North America.
(Photo courtesy of Troy B. Thompson)
Press Release January 21, 2026

Earthjustice Strongly Opposed to Rep. Gosar Legislation to Delist Mexican Gray Wolf

Markup scheduled for Thursday on legislation to prematurely strip Endangered Species Act protections
Two wolves in the winter forest.
(Kjekol / Getty Images)
Press Release August 28, 2025

Anti-Wolf Ballot Measure Drive Fails to Gather Enough Signatures in Colorado

Ballot measure deadline passes ensuring reintroduction can continue
(Steve Geer / Getty Images)
From the Experts April 30, 2024

Congress is Trying to Weaken the Endangered Species Act. Again.

A new bill to remove ESA protections needed for wolves and grizzly bears has been proposed.
Press Release: Victory February 10, 2022

Gray Wolves Regain Federal Endangered Species Act Protections

Court decision will prevent hunting, poisoning, and trapping in 44 states
The Gallatin Range in Southwest Montana. (Jared Lloyd / Getty Images)
feature September 23, 2025

The Intermountain West: Regional Spotlight

Our teams in Bozeman, Montana, and Denver, Colorado, have spent decades fighting to defend the web of life, to protect people’s health, and to advance a just transition to clean…
Clockwise, from top-left: (Jerry Neal / CPW), (SimonSkafar / GettyImages), (Courtney Couch / NOAA), (Zach Stern / CC BY-NC-ND 2.0), (K. King / USFWS), (Zara / 500px), (Lisa Hupp / U.S. Fish and Wildlife Service), (New Zealand Department of Conservation), (jacobeukman / Getty Images), (Troy Harrison / Getty Images)
feature November 3, 2025

Biodiversity Program Report

Earthjustice fights to protect imperiled species and the habitats that support their lives — and ours. Here are highlights of our work to defend our natural world over the past…