Wikia

"If you thought that orcs were vicious, then you haven't seen anything yet." - Dralor^{TCGWG 151}

Wolf mounts are exclusively Horde only mounts.

Factional mounts: Apprentice

These mounts give a 60% speed increase on land. You can purchase these mounts from Ogunaro Wolfrunner <Kennel Master> in the Valley of Honor in Orgrimmar so long as your character has riding skill of 75 (obtainable at level 20). If you are playing as any race other than an orc, you will also need to have Exalted reputation with Orgrimmar.

Factional mounts: Journeyman

These mounts give a 100% speed increase on land. You can purchase these mounts from Ogunaro Wolfrunner <Kennel Master> so long as your character has riding skill of 150 (obtainable at level 40), and are restricted similarly to the apprentice mounts above.

Other Wolf mounts

PvP Wolfs

The Black War Wolf is available from Raider Bork <Mount Quartermaster> in Orgrimmar for Honor points. You do not need to have exalted reputation with Orgrimmar to purchase it.

Additionally, characters who have gained Exalted status with the Frostwolf Clan can purchase the Frostwolf Howler from the Horde Alterac Valley Quartermasters.

Argent Tournament

These following Wolves can be purchased from the Argent Tournament. You must have completed Champion of Orgrimmar or be an orc to gain access to this quartermaster.