Ok - we have yoga frogs with little beanie caps that fly --why cant we have pigs that fly?
Maybe the pigs are the Freight Mail ... that if you want to mail someone , say 3 things in a "mailing" that instead of a frog they get sent a pig with WINGS that carries 3 items and deliveres it to you ..
Maybe the piggys are intent on learning all the flying secrets of the yoga frogs?
Maybe the pigs are long lost cousins to the frogs?
Maybe the frog yoga master and the pig yoga master are adopted brothers to each other ??
What do ye glitchen say ?