Pandaren mounts are available on their corresponding race. Create a new character and you can get them without the standing.
Cataclysm
3 / 3Complete
Hellscream's ReachNo standing yet
1 / 1
RamkahenNo standing yet
2 / 2
Wrath of the Lich King
5 / 5Complete
The Sons of HodirNo standing yet
2 / 2
The SunreaversHonored · 11,518 / 12,000
2 / 2
The Wyrmrest AccordNeutral · 780 / 3,000
1 / 1
The Burning Crusade
16 / 16Complete
Cenarion ExpeditionHonored · 4,902 / 12,000
1 / 1
NetherwingNo standing yet
6 / 6
Sha'tari SkyguardNo standing yet
5 / 5
The Mag'harNo standing yet
4 / 4
Horde
53 / 53Complete
Bilgewater CartelFriendly · 1,510 / 6,000
1 / 1
Darkspear TrollsNeutral · 1,910 / 3,000
8 / 8
OrgrimmarNeutral · 1,910 / 3,000
18 / 18
Silvermoon CityFriendly · 2,410 / 6,000
9 / 9
Thunder BluffNeutral · 1,910 / 3,000
8 / 8
UndercityFriendly · 1,510 / 6,000
9 / 9
Darkspear Trolls and Orgrimmar and Silvermoon City and Thunder Bluff and Undercity mounts are available on their corresponding race. Create a new character and you can get them without the standing.
Standings come from the last update, about 2 hours ago. Some mounts may be missing or incorrect still. Please report any issues on the contact page.