Feral-tribe

The Feral-Tribe (Orc."Gazog-Hai") were one of several orcish tribal confederations in which the Orcs of Mordor had split after the Fall of Barad-dur in the War of the last Alliance.The Gazog-Hai lived in the unsettled wilderness, often as nomadic clans, in company of Wolves and other wild animals.They were hunters,trappers and beastmasters.After Saurons return during the years of TA 1980-2002 the remaining Feral Orcs were reorganised and redistributed into newly founded Tribal coalitions where their masters often found them useful as Trackers, Scouts and Herders.

See:
 * Gajutar

References:

 * Middle-earth: Shadow of war