Oogi

Oogi  is one of the flying bison owned by Tenzin and his family. He is a descendant of a group of flying bison found by Avatar Aang after the species was thought to be extinct.

History
Oogi was used by Tenzin and his family to travel to the Southern Water Tribe to meet the newly incarnated Avatar, at which point Tenzin informed her that he would be unable to train her due to unrest in Republic City. Oogi was also used to fly the family back to Air Temple Island.

Trivia

 * The Laughing Buddha is often portrayed wielding a wish granting fan, known as an oogi.
 * Sokka claimed to get "oogies" when witnessing romantic exchanges between Aang and Katara.
 * Oogi responds to the command "yip yip," just as Appa did.