Pandaren mounts are available on their corresponding race. Create a new character and you can get them without the standing.
Cataclysm
2 / 3
Hellscream's ReachNo standing yet
0 / 1
RamkahenNeutral · 0 / 3,000
2 / 2
Wrath of the Lich King
5 / 5Complete
The Sons of HodirHated · 1,950 / 36,000
2 / 2
The SunreaversNo standing yet
2 / 2
The Wyrmrest AccordNeutral · 0 / 3,000
1 / 1
The Burning Crusade
16 / 16Complete
Cenarion ExpeditionRevered · 4,320 / 21,000
1 / 1
NetherwingNo standing yet
6 / 6
Sha'tari SkyguardNo standing yet
5 / 5
The Mag'harUnfriendly · 2,512 / 3,000
4 / 4
Horde
52 / 53
Bilgewater CartelRevered · 2,419 / 21,000
1 / 1
Darkspear TrollsHonored · 7,449 / 12,000
7 / 8
OrgrimmarRevered · 10,469 / 21,000
18 / 18
Silvermoon CityNo standing yet
9 / 9
Thunder BluffRevered · 2,694 / 21,000
8 / 8
UndercityRevered · 13,664 / 21,000
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 15 hours ago. Some mounts may be missing or incorrect still. Please report any issues on the contact page.