Ox pets are similar to the other Non-evolvable pets in the sense they start from level 60 and have no skills. They will also take up a pet slot, have loyalty, and can be ridden. They are obtainable from the Ox Lucky Box.Oxes are declined in two colors : Blue Ox and Red Ox, that have a smaller chance to be obtained via the Ox Lucky Box.
Like Unicorns, the Ox can "evolve" to become a True Ox and an Ultimate Ox. True Seal Ox require two level 65 Ox of the same color, while Ultimate Ox require two level 70 True Ox of the same color. The primary difference is in their appearance, where they will sprout horns and begin to glow. You will need the True and Ultimate Ox Alchemy Scrolls of the right color from the Item mall to do this, based on their respective kind. Actual Alchemy or High level alchemy is not required for this.