Like canidae, goblinoids come in many shapes, sizes and temperaments. Some forms where believed to have been bred by ancient wizards for their specific dark purposes. Others are mongrels, the result of unfortunate interbreeding.
A pure goblin is believed to exist in the depths of the Dragon's Cauldron. It is rumoured to be a magnificent creature very unlike the more common strains that plague the outlands (like comparing the majesty of the wolf to the pitiful pekingese.)