Does Equine language exist?

[Horseboy223 35]

In equestria, everypony speaks english. But Does everyone know if equine language exists in equestria?

 

[Theautisticrebel 304]

They don't actually speak English, they speak a language called Ponish, and the show was just translated from Ponish to English.

[Gaines 1,220]

I personally believe that ponies learn English (or whatever the show is spoken in for others) to communicate with other creatures, *and* Ponish to speak to other ponies, similar to how some people learn two languages from a young age. There's another language called "Old Ponish" which may be similar to Old English/Anglo-Saxon, or Latin.
If you're interested in learning more about pony languages or writing, I would recommend checking these out : https://youtu.be/i8q11pp-X_c , https://mlpforums.com/topic/45522-alphabet-of-the-unicorns/