A district court preliminarily enjoined FWS from releasing endangered Mexican wolves in New Mexico without first obtaining the necessary permits from the state's game and wildlife agency. New…

A district court held that FWS violated the ESA when it decided not to list the wolverine as a threatened species. FWS proposed to list the wolverine in 2013, but then changed course in 2014 and…

A district court remanded a portion of FWS’ addendum to a 2007 biological opinion concerning the incidental take of grizzly bears in the Grand Teton National Park. In 2007, FWS and the National…

A district court dismissed conservation groups' lawsuit challenging FWS' and DOI's decision to issue permits authorizing two American hunters to import the trophies they garnered in…

The D.C. Circuit upheld FWS' decision to withdraw its proposal to list as endangered the dunes sagebrush lizard in New Mexico and Texas. After FWS proposed to list the lizard, it received…

A district court denied a motion to amend its prior ruling vacating FWS' listing of the lesser prairie chicken as a threatened species under the ESA. FWS argued that the court should have…

The Ninth Circuit reversed a lower court decision vacating FWS' designation of critical habitat in Alaska for the polar bear, a threatened species, and reinstated the designation. The…

A district court ordered the state of Idaho to propose a plan to protect the Canada lynx, a threatened species, from being inadvertently captured or killed in northern Idaho due to traps set by…

The D.C. Circuit dismissed a conservation group's lawsuit against FWS for failing to make a timely determination on their petition to list certain species of sturgeon as endangered or…

A district court held that animal rights groups lack standing to challenge FWS' decision to allow the National Primate Research Center to transfer eight of its chimpanzees to a zoo in the…