Tiger Skin Farming Locations
Tiger Skin is found in two different zones, the first of them was added during the Kunark expansion pack - Emerald Jungle. The next place for you to find Tiger Skin is in Stonebrunt Mountains which was added I think during the LoY expansion but I am not entirely sure.
Wizards and Druids both have easiest access to Stonebrunt and Emerald Jungle since they have ports here. Along with Tiger Skins the Tigers here will also drop Low, Medium and High Quality Cat Pelts which can also be used in Unfired Poison Vials along with other Tradeskill combines.
Emerald Jungle Tiger Skin Farming Locations
Emerald Jungle is the lesser of the two zones to hunt Tigers in for their skin. You can find them all over the zone but I found that they more commonly spawn in the south than in the north. Clear all the enemies you find in the forest as it seems like a lot of the trash here shares a respawn time.
Stonebrunt Mountains Tiger Skin Farming Locations
This is the best place for you to farm Tiger Skins. There are quite a few tigers that roam around the northern portion of Stonebrunt.... You'll most commonly find them roaming around northeast/west of the town in the central northern portion of the zone.