I know that specifically in the Northwest Territories, there's money provided to trappers for turning in carcasses of wolverines and wolves for study. They're doing population studies and so on, especially with the problems they're having with the caribou populations in NWT. I know there's an incentive for the trappers to turn in carcasses so that the biologists can study them.
On April 23rd, 2015. See this statement in context.