Skinning

Beasts can be skinned once they are dead, with Skinning (1 to 100): a beast asks 5 skill a level past level 2, and skinning it can raise yours.
ItemWhere to find itUsed by
Bog HideSkinning: Bog Horror, Rotwalker, Gorrum the Plague Bearer, Oszra, Brine Horror
Victory chests: The Drowned Bog, The Blightmarsh, The Plague Bearer, The Drowned Fane, Kaldrak the Floorbreaker
Leatherworking 21
Cougar HideSkinning: Canyon CougarBlacksmithing 2, Leatherworking 2, Scribing 1
Cured HideLeatherworkingBlacksmithing 5, Leatherworking 7, Scribing 1
Cured StormhideLeatherworkingLeatherworking 22
Frost PeltSkinning: Rimefang Wolf, Rimefang Pup, Hoarfell Yeti, Grimsnow, Bjorn Iceborg, Old Toothless
Merchant
Blacksmithing 8, Leatherworking 36, Tailoring 1
Jungle HideSkinning: Jungle Panther, Jungle Ape, Shadow Panther, Silverback, Old Nightpaw, ThunderchestBlacksmithing 4, Leatherworking 6
Mirescale HideSkinning: Bog Lurker, Fen Creeper, Fen Crocodile, Bull Crocodile, Old Mirebelly, WeepjawBlacksmithing 9, Leatherworking 37, Tailoring 1
Scorched HideSkinning: Cinder Imp, Emberwing, Puff the Magma Dragon, Grizzle Coalpocket
Victory chests: Cinder Swarm, Embers Rising, The Blightmarsh
Leatherworking 22
Spider ChitinSkinning: Hollow Hatchling, Gloomweaver, Fen Creeper, Webspinner, Webspinner Matriarch, Hollow Webspinner …
Victory chests: The Silk Hollow, Webspinner Hollow; Merchant
Leatherworking 20, Scribing 4
Stormdrake LeatherLeatherworkingLeatherworking 5, Alchemy 5
StormhideSkinning: Storm Harpy, Harpy Matron, Clawpernicus, SkyrendBlacksmithing 7, Leatherworking 21
Wolf HideSkinning: Duskfang Whelp, Duskfang Wolf, Ashwood Alpha, Stormhound, Rime Hound, Greyjaw the Pack Mother …
Victory chests: The Hungry Pack, The Ashwood Alpha, The Briar Witch, Hounds of the Storm, The Rime Huntress; Salvaging gear; Merchant
Blacksmithing 10, Leatherworking 41, Scribing 1

The number after a profession is how many of its recipes use it. All trade goods: Trade Goods.