Zao, Calfling of Niuzao
Source: Vendor. Always on the lookout for a fight or some tasty grass, Zao keeps his head down and eyes forward. Beast type. For the tournament battle against Zao go here.
Zao, Calfling of Niuzao is a battle pet purchased from Master Li on the Timeless Isle using Celestial Coins earned through the Celestial Tournament.
Guide awaiting review
Enter the Celestial Tournament
To participate in the Celestial Tournament on the Timeless Isle, you must have 15 level 25 pets. Winning the tournament and completing its weekly quest, The Celestial Tournament, awards 
Celestial Coins.
Purchase Zao from Master Li
Once you have accumulated 3 Celestial Coins, purchase Zao, Calfling of Niuzao from Master Li on the Timeless Isle. Note that this pet cannot be caged or traded.
Tips
Collecting all four August Celestial pets — Chi-Chi, Zao, Xu-Fu, and Yu'la — awards the Celestial Family achievement.
Trample is strong against tanky H/H pets, while Niuzao's Charge pairs well with Wish to recover damage taken during its charge preparation.
