[Image: http://img.photobucket.com/albums/v376/MystickSkye/mabinogi/petracedesca.gif]
[Image: http://img.photobucket.com/albums/v376/MystickSkye/mabinogi/petracedescb.gif]
[Image: http://img.photobucket.com/albums/v376/MystickSkye/mabinogi/racexmltigera.gif]
[Image: http://img.photobucket.com/albums/v376/MystickSkye/mabinogi/racexmltigerb.gif]
The Siberian Tiger seems to be a lesser variant of the White Tiger (Ala Yellow Sprite to Lime Sprite and other such pairs). Prior to this I don't think it's existed (someone correct me if I'm wrong, I'm out of touch with TW And CH servers) and in my opinion it seems to show in the very slightly rehashed stats. It has slightly less summon time (78min vs 83min), slightly less max health at birth (70 vs 82) and 4 less inv (24 vs 28). Otherwise all the base stats are the same though I didn't check for stat gain at aging, leveling and such.
This doesn't really mean too much (translated Nekojima data could be found in the pack files as early as October 2009) but for people looking for hope...