From WoWWiki

Can mean two things:

1. A type of skin item usually gathered with the Skinning profession from a skinnable corpse resource and usable as an ingredient for mostly Leatherworking recipes.
2. To try to conceal or make hidden. Also called Stealth.

Leatherworking hides

Hides
Skinned
Light Hide Medium Hide Heavy Hide Thick Hide Rugged Hide
Cured
Cured Light Hide Cured Medium Hide Cured Heavy Hide Cured Thick Hide Cured Rugged Hide

Most hides usually need to be processed or treated by curing with [Salt] before they can be used by the Leatherworking profession.

Normal Hides

You get hides the same way you get skins, but the drop rate is lower. All of the standard hides require Leatherworking to cure the hides before they can be used as ingredients for crafting items.

• [Light Hide], Thottbot (10-27 lvl mobs)
  • [Cured Light Hide], Thottbot
• [Medium Hide], Thottbot (15-38 lvl mobs)
  • [Cured Medium Hide], Thottbot
• [Heavy Hide], Thottbot (26-46 lvl mobs)
  • [Cured Heavy Hide], Thottbot
• [Thick Hide], Thottbot (40-57 lvl mobs)
  • [Cured Thick Hide], Thottbot
• [Rugged Hide], Thottbot (47-59 lvl mobs)
  • [Cured Rugged Hide], Thottbot
• [Fel Hide], Thottbot (Outland Demons and Warp Stalkers.)
  • Unlike the Azeroth hides, does not need to be cured to use.

Special Hides

Some special hides do not need to be cured before they can be used:

• [Shadowcat Hide], Thottbot - From Shadow Panthers in the Swamp of Sorrows and Shadowmaw Panthers in Stranglethorn Vale
• [Thick Wolfhide], Thottbot - From level 40+ wolves
• [Pristine Hide of the Beast], Thottbot - Requires 310 Skinning skill (used to require [Finkle's Skinner], which drops off The Beast itself, or [Zulian Slicer] from Zul'Gurub before the Burning Crusade).
• [Light Silithid Carapace], Thottbot
• [Heavy Silithid Carapace], Thottbot