Winning a fight with many of the snakes and cows having (but not necessarily wielding) a varmint skinnin' knife will give you skins. Whether skinning is possible depends on the specific fight.
This category lists locations that have a combat where skinning is possible. Look for the Skins entry in the combat infobox.
Pages in category "Skinnables"
The following 13 pages are in this category, out of 13 total.