So, someone IRL inquired what my ponysa was and I had to admit, I'm not totally satisfied with the earth/unicorn/pegasus/alicorn choices.

So my Ponysa is an Andrewsarchus: link
He first appeared here: link

His name is Lamb Chop, his cutie mark is a Mutton shank, and I still haven't made up my mind about whether he talks or not. But being that his nearest relatives are sheep, He can't be too bright.

If you're confused by Twilight and Angel's reactions, consider that rotting meat makes up a good chunk of his diet, and take a moment to imagine what his breath must be like.

All things My Little Pony Belong to Lauren Faust/Hasbro inc.