A coalition of Olympic Cougar Project members works to replace the GPS collar on Lilu, a wild cougar, near Port Angeles, Washington, U.S., December 14, 2021.

A view of the mountains of the Olympic Peninsula is seen near Port Angeles, Washington, U.S., December 13, 2021.

Vanessa Castle, a tribal member of the Olympic Cougar Project, listens on a tracking device while tracking Lilu, a wild cougar, near Port Angeles, Washington, U.S., December 13, 2021.

A hound dog peaks his head out of a "hound box"

Andy Stratton, (C) 27, senior file technician with a coalition of Olympic Cougar Project members, holds his hounds on a leash before tracking Lilu, a wild cougar

A coalition of Olympic Cougar Project members climb off trail past the stump of an old growth cedar tree to track Lilu, a wild cougar

Read Barbee, 23, a field technician and part of a coalition of Olympic Cougar Project members, tracks Lilu, a wild cougar, using a device that that detects radio waves near

Vanessa Castle, tribal member of the Olympic Cougar Project, tracks Lilu, a wild cougar

The Olympic Cougar Project members chase Lilu, a wild cougar, up a tree

Dave Manson, (C) project biologist and member of the Olympic Cougar Project prepare to dart Lilu, a wild cougar, with a tranquilizer

Kim Sager-Fradkin prepares a tranquilizer dart for Lilu

The Olympic Cougar Project members measure Lilu

Lilu, a wild cougar, leaves an area after waking up from being tranquilized

Kim Sager-Fradkin and Mark Elbroch, both scientists with the Olympic Cougar Project, look over a former cougar den for scientific data

Mark Elbroch, scientist for Pathera organization and a member of the Olympic Cougar Project, points out a cougar print

A kill site in a former cougar den

A general views of I-5 is seen near Olympia, Washington, U.S., December 17, 2021.

Glen Kalisz, Habitat Connectivity Biologist with the Washington State Department of Transportation, shows data collected about cougar habitats near Olympia, Washington

Glen Kalisz, Habitat Connectivity Biologist with the Washington State Department of Transportation, looks at a trail camera that generates data for habitat connectivity for cougar habitats

Glen Kalisz, (L) Habitat Connectivity Biologist with the Washington State Department of Transportation displays a photo taken by the trail camera that shows a cougar was next to I-5 near Olympia, Washington