I made this Fel Scales farming guide to help out players who want to farm the leathers instead of buying them from the Auction House. I decided to search for places with high density of mobs which I can skin and drop Fel Scales. I traveled around Outland, and after a while I made a list of places.
IRMPORTANT: Learn Outland Skinning from any of these NPCs below before you start farming. You can skin these mobs below without Outland Skinning, but you will get a lot fewer leathers.
Before you go anywhere, clear your bags first. That’s because for skinning the animals, you need to loot them first. This means you will gather a lot of junk stuff filling your bags.
Blade's Edge Mountains
Warning! This place is currently bugged and sometimes you don't get anything when you skin these mobs.
Killing Shard-Hide Boars at Blade's Edge is also a great way to farm Fel Scales.
You can't get to this place if you don't have a flying mount.
Kill Thornfang Venomspitters and Thornfang Ravagers. I only recommend this place if the other two mentioned in the guide are already farmed by someone. The place is not bad, but you will have to wait around 1 minutes for the mobs to respawn after you killed all of them (this is only a problem if you have a high level character and you kill everything in one shot).