Schematic: Lifelike Mechanical Toad

Source
This item is a world drop from level 48 - 60 mobs.

It can also drop from the following raid bosses:
 * Nefarian in Blackwing Lair


 * Azuregos in Azshara
 * Emeriss in Ashenvale
 * Lethon in Ashenvale
 * Taerar in Ashenvale
 * Ysondre in Ashenvale
 * Onyxia (Classic) in Onyxia's Lair (Classic)