WoWDB

You blend into your surroundings, causing you and your pet to be untargetable by ranged attacks. Also reduces the range at which enemy creatures can detect you, and provides stealth while stationary.

You can lay traps while camouflaged, but any damage done by you or your pet will cancel the effect. If cast while in combat, lasts for 6 sec. Otherwise, lasts for 60 sec.