The furry pelt of muffalo. Recognizable by its distinctive blue tint. Good at temperature regulation in cold climates.
The following animals provide Bluefur.
As it is 6-way tied for the 11th most protective textile in the game, it is largely irrelevant as protective clothing after the very early game, and even then there are many other options that are just as good or better. While its cold insulation is moderately good, there are several textiles that provide both better protection and equivalent or better insulation, including wolf and bearskin, heavy fur, devilstrand and, of course, thrumbofur. Thus, like its use in protection, bluefur will be superseded in this role after the early game.
For use in furniture, it only has a slightly improved beauty factor than other common textiles, but its rapid redundancy as clothing makes it a decent choice for improving furniture beauty. Its inferiority to wools in this regard and their commonness compared to bluefur limits its long term utility however.