I made this Raw Beast Hide farming guide to help out players who would rather farm the leathers instead of buying them from the Auction House. I traveled around Draenor, searching for places with a high density of mobs that I can skin and drop Raw Beast hide.
Learn Draenor Skinning from 
[A Guide to Skinning in Draenor]. You can get this scroll by skinning mobs at Draenor. It's important to learn the scroll as soon as you get it because you will get more leathers.
Raw Beast Hide
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.
Nagrand
There is a place in Nagrand where you can find a pack of Tamed Clefthoof, and when you kill all of them, one or two new ones will spawn instantly. So, basically you don't have to travel around, you can stand in one place and kill these mobs.
The Clefthoofs also drop Sumptuous Fur, and Raw Clefthoof Meat, which makes this place even better.
Coordinates: 78.7, 72.2
Note: There is two extra Tamed Clefthood near the Gorian Gladiators, and sometimes you have to kill those too to force a respawn.
Frostfire Ridge
Frost Wolfs at Frostfire Ridge have a fast respawn rate, probably around 30 seconds. These wolfs are often used for the Barn work orders, so there are usually a few horde players there.
If there are too many players, and you can't farm the Wolfs, there are a bunch of Icespine Stinger nearby, so you can farm them instead of the Wolfs. But, the Wolfs are always better to farm because they drop Sumptuous Fur.
Shadowmoon Valley
Kill and skin Moonshell Crawlers. The respawn rate is really fast, you will never run out of them.
Spires of Arak
Spore Drifters at Spires of Arak respawn fast, so it's a really good farming place.
Shadowmoon Valley
Kill and skin Rockhide mobs.
