Primarily marten. Some woverine and wolf. This knife goes because it works so well. Plus if I drop it into a few feet of snow and never see it again, I am only out 20 bucks.Very nice. That look goes with the era and the aura of duty knife. May I ask what you trap for? I haven't trapped since being a kid on the farm but I have friends who are into it big time--one of those are in AK.