Fishers are house-cat sized members of the weasel family, related to minks and otters. They are native to the forests of Washington, including the Olympic Peninsula, but disappeared from the state because of overtrapping in the late 1800s/early 1900s and habitat loss.
In early 2008, 18 fishers were released into Olympic National Park, marking the beginning of a three-year reintroduction project and restoration of these creatures to the State of Washington.