Pony
Ponies were a sapient quadrupedal species which existed in various universes.
Biology
Ponies were quadrupedal and had "cutie marks". (PROSE: Jenny Everymare, etc.)
History
Pinkie Pie and Jenny Everywhere's universe
In one universe, Pinkie Pie and Jenny Everywhere were talking ponies. They once encountered each other and remarked on this. (COMIC: Untitled)
Kokotomo Island
On Kokotomo Island, Andrew Chapel was briefly transformed into a pony, to which he asked if there was a rule against him having hands in any of his potential forms. (COMIC: The Halloween Caper)
Jenny Everymare's universe
In one universe, Jenny Everymare was a version of Jenny Everywhere with white fur, wings, and an infinity symbol cutie mark. She was either native to Equestria, or arrived there after shifting from another universe. (PROSE: Jenny Everymare)
Losing Peter Griffin
In one universe, Twilight Sparkle was a pony with purple fur who lost Peter Griffin, visiting him on his deathbed in a hospital. (COMIC: Peter's Death) She later went past as a version of Jenny Everywhere promoted Gevity™ to the local version of Jenny, still in the hospital. (COMIC: Jenny Says: Drink Gevity™!)
