Legend Of Korra: Will It Bend!

[Kobold-Bard]

So.....how does Tenzin have a flying Bison? Do they reproduce by budding or just live forever?

Aang found some more of a different breed hidden somewhere you can only get to by air.

I hoped this meant there's be some other Airbenders in the new series who lived up there with the Bisons, but sadly it was not to be.

I also don't know what happened to the rest of the found ones, since we've only seen the one that Tenzin uses.