Outland Tamer

I wasn't sure if anyone would need a list like this. I made it cause I was hoping from one website to another. I hope this helps some one.

Eastern Kingdoms Tamer:

Arathi Highland: LVL 7 Battle Pets
Blasted Lands: LVL 16 Battle Pets
Cape of Stranglethorn: LVL 9 Battle Pets
DuskWood: LVL 5-6 Battle Pets
Elwynn Forest: LVL 1-2 Battle Pets
Ghostlands: LVL 3-5 Battle Pets
Hinterlands: LVL 11 Battle Pets
Northern Stranglethorn: LVL 7-8 Battle Pets
Searing Gorge: LVL 13 Battle Pets
Swamp of Sorrows: LVL 14 Battle Pets
Twilight Highlands: LVL 23 Battle Pets
Westfall: LVL 3-4 Battle Pets
Badlands: LVL 13 Battle Pets
Burning Steppes: LVL 15 Battle Pets
Deadwind Pass: LVL 17 Battle Pets
Eastern Plague Lands: LVL 10 Battle Pets
Eversong Woods: LVL 1-2 Battle Pets
Hillsbrad Foothills: LVL 6 Battle Pets
Loch Modan: LVL 3-5 Battle Pets
Redridge Mountains: LVL 4-5 Battle Pets
Silverpine Forest: LVL 3-5 Battle Pets
Trisfal Glades: LVL 1-2 Battle Pets
Western Plaguelands: LVL 12 Battle Pets
Wetlands: LVL 3-5 Battle Pets

Kalimdor Tamer:

Teldrassil: LVL 1-2 Battle Pets
Azuremyst Isle: LVL 1-2 Battle Pets
Darkshore: LVL 3-5 Battle Pets
Durotar: LVL 1-2 Battle Pets
Felwood: LVL 14 Battle Pets
Mount Hyjal: LVL 22 Battle Pets
Northern Barrens: LVL 3 Battle Pets
Southern Barrens: LVL 9 Battle Pets
Tanaris: LVL 13 Battle Pets
Uldum: LVL 23 Battle Pets
Winterspring: LVL 17 Battle Pets
Azshara: LVL 3-5 Battle Pets
Bloodmyst Isle: LVL 3-5 Battle Pets
Desolace: LVL 7-8 Battle Pets
Dustwallow Marsh: LVL 12 Battle Pets
Feralas: LVL 11 Battle Pets
Mulgore: LVL 1-2 Battle Pets
Silithus: LVL 16 Battle Pets
Stonetalon Mountains: LVL 5-6 Battle Pets
Thousand Needles: LVL 13 Battle Pets
Un'Goro Crater: LVL 15 Battle Pets

OutLand Tamer:

Blade's Edge Mountains: LVL 18-19 Battle Pets
Nagrand: LVL 18 Battle Pets
Shadowmoon Valley: LVL 20 Battle Pets
Zangarmarsh: LVL 18 Battle Pets
Hellfire Peninsula: LVL 17 Battle Pets
Netherstorm: LVL 20 Battle Pets
Terokkar Forest: LVL 18 Battle Pets

Northrend Tamer:

Borean Tundra: LVL 20-21 Battle Pets
Dragonblight: LVL 22 Battle Pets
Howling Fjord: LVL 2021 Battle Pets
Sholazar Basin: LVL 21 Battle Pets
Zul'Drak: LVL 22 Battle Pets
Crystalsong Forest: LVL 22 Battle Pets
Grizzly Hills: LVL 21 Battle Pets
Icecrown: LVL 22 Battle Pets
Storm Peaks: LVL 22 Battle Pets

Pandaria Tamer:

Dread Wastes: LVL 24 Battle Pets
Krasarang Wilds: LVL 23-24 Battle Pets
Townlong Steppes: LVL 24 Battle Pets
Valley of the Four Winds: LVL 23-24 Battle Pets
Jade Forest: LVL 23-24 Battle Pets
Kun-Lai Summit: LVL 23-24 Battle Pets
Vale of Eternal Blossoms: LVL 24 Battle Pets

Try as I might, I could not get credit for this achievement in Hellfire Penninsula.

I was having trouble getting credit for Netherstorm and Hellfire Peninsula even after catching multiple pets of several different qualities.

After reading comments on the Northrend Tamer achievement, it seems several people were having trouble getting credit for Storm Peaks but were able to resolve the issue by relogging. Relogging also fixed the Outland Tamer issue I was having.

So, if you're not getting credit, try relogging.