Could be a scottish seagull.
YES! I hope you can put saddles on them. Pigs are getting SO old
To me it looks like a very broken tetromino.
Wow, I bet Blinky wishes he had one of those to help with his old mob traps. They look like a pain to shoot down, too.
Wow, imagine the mining posibilitys if you could ride and steer one of those.
Hire a hundred Endermen, take down one house. Hire a dragon? Take down the entire map! Geezus that's destruction!