Feral Spirit is a shaman ability learned at level 60 for those with the enhancement specialization. It summons two spirit wolves that act independently, though any commands issued by the shaman via the pet bar directs both wolves. When the wolves deal damage, they heal both themselves and the shaman for 150% of the damage done. The wolves only last 30 seconds.
As of patch 3.2.0, Spirit Wolves receive 35% of the shaman's armor, 30% of the shaman's attack power, 100% of the shaman's hit rating, and 30% of the shaman's stamina.