Grey Saber Worg

Grey Saber Worg
Can Be Tamed Tundra Wolf68Borean Tundra
Can Be Tamed Varg71Howling Fjord
Can Be Tamed Duskhowl Prowler72-73Grizzly Hills
Can Be Tamed Hungry Worg72-73 SpawnedGrizzly HillsSpawns during Alliance quest "Mr. Floppy's Perilous Adventure". Can be tamed by Horde if you find a helpful Alliance to spawn it.
Can Be Tamed Grizzlesnout73Grizzly Hills
Can Be Tamed Graymist Hunter73-74Grizzly Hills
Can Be Tamed Sentry Worg77-78Icecrown
Can Be Tamed Sinewy Wolf78Crystalsong Forest
Can Be Tamed Cavedweller Worg79-80The Storm Peaks
Can Be Tamed by Alliance Only Glopgut Warhound84Twilight HighlandsOnly found during a specific Alliance quest phase for "Rescue at Glopgut's Hollow"
Can Be Tamed Longfang Cub85Valley of the Four Winds
Can Be Tamed Longfang Den-Mother86Valley of the Four Winds
Can Be Tamed Thieving Wolf86Thunderfoot Acres, Shang's Stead, Valley of the Four Winds

Cannot Be Tamed Dragonflayer Worg67Howling Fjord