After reading this page, I decided to try getting sheepskins from the sheep in Konschtat Highlands. What I soon found out is, as a Lv.20 Tarutaru BLM, I have difficulty farming these. Each sheep I fought checked as easy prey to me. It's also very tough trying to farm these due to the amount of goblins roaming through the areas where the sheep are most common. They're very cluttered in the area where most of the sheep are. My elemental magic skill is capped and my INT is +9 from equipment. My MP gets me safely through 3 sheep before I need to rest, making this very innefficient.
With so much difficulty farming these, I figured I'd check out the sheep in Ronfaure. Well, I've been drowning sheep with water for the past hour. I've obtained 1 sheepskin :( I obtain a slice of giant sheep meat from just about every sheep I defeat. I have no trouble farming these, however the drop rate on sheepskin has been very low.