Intriguing Specimens is a new quest added in patch 4.3 to the Terokkar Forest area, and can be acquired from and returned to [npc=54694] inside of the [zone=3792] dungeon instance, which is a representative for [faction=933]. He is located in the northern-most instance portal, inside of the [zone=3792] itself. It is highly suggested to pick up Safety is Job One and Undercutting the Competition from [npc=54692] right next to [npc=54694] before clearing this dungeon.
[item=72127] is acquired from killing crystal colossus boss [npc=18343].
[item=72126] is acquired from killing giant voidwalker boss [npc=18341].
Players DO NOT need to be in Heroic mode in order to complete this quest.
With both guild perks [spell=78635], players will receive 165 reputation with [faction=933], and 1 guild rep (2 with [item=69210]).
NOTE: As of this time few of the tooltips, quests, or Quick Facts have been updated linking items/NPCs/quests together. This is a single quest and as yet does not have any associated chains or quests thereafter. Will continue to scan for changes and update as needed.