Brown Mastiff

Brown Mastiff
Can Be Tamed by Worgen Only Mountain Mastiff7GilneasAccompanies watchmen around Tempest's Reach. Becomes friendly (and untameable) after you defeat the rebels and rescue Greymane.
Can Be Tamed by Worgen Only Wary Mastiff10Stormglen Village, Keel Harbor, Gilneas
Can Be Tamed Lost Gilnean Wardog14 RareSilverpine ForestFrantically circles an abandoned camp above Deep Elem Mine.
Can Be Tamed by Horde Only Bullmastiff35-36Western PlaguelandsRoams around Andorhal.
Can Be Tamed Blighthound40-41Eastern PlaguelandsDoes not keep the green glow.

Cannot Be Tamed Gilnean Mastiff5GilneasFriendly.
Cannot Be Tamed Gilnean Mastiff5-6Gilneas
Cannot Be Tamed Attack Mastiff6 SpawnedGilneasNot a beast. Summoned during fight against Dark Ranger Thyala.
Cannot Be Tamed Rabid Mastiff6Shadowfang KeepInvalid target.
Cannot Be Tamed Gilnean Mastiff12-13GilneasFriendly.
Cannot Be Tamed Durnholde Tracking Hound65 EliteOld Hillsbrad Foothills