Mounts that you obtain from PvP duels WoW: Warlords of Draenor Guide

Vicious War Raptor - You receive this mount after you obtain the Primal Combatant achievement. You need to win 100 3x3 duels or 40 Battlegrounds. It can be received by the Horde members, from Deathguard Netharian in Orgrimmar.

Vicious War Ram - this is the Covenant's counterpart of the Raptor. In this case, you will have to obtain the Primal Combatant achievement, i.e. to win 100 3x3 duels, or 40 Battlegrounds. To receive it, you need to go to Stormwind and see Necrolord Sipe.