Since @John Brunner brought up the issue with beaver pelts, I thought I would post some things about using fur for real, not decorative purposes. In the North, fur is used for a lot of clothing, and, despite what PETA says, there are things for which there are no synthetic substitutes. One of those is the fur in ruffs for parkas. Wolverine fur is the fur of choice for those ruffs, but wolf can be substituted if no wolverine is available. The fur ruffs keep one from getting a frozen face in the wind and cold of the far north. Synthetics collect ice on the "fur" and cause numerous issues, but ice doesn't cling to wolverine fur.