Animals Tree-climbing carnivores called fishers are back in Washington’s forests Trapping and habitat loss had wiped out the population A crowd gathers to watch a fisher released into Washington state’s Mount Rainier National Park in December 2016. About 280 of these tree-climbing animals have been translocated from Canada since 2008 to help fisher populations rebound. KEVIN BACHER/NPS (CC BY 2.0) Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Brianna Randall October 7, 2022 at 10:00 am Holding an antenna above his head, Jeff Lewis crept through an evergreen forest in the Cascade mountains, southeast of Seattle.