I really can#t say that i approve of…that..
But we will see, even if this…..dog…is really a content of Equestria girls, even if the show sucks, there is no real link to mlp, it may be a spinoff, but that means that there is no need to be upset if that show is bad, none forces you to watch it and you still can continue watching our beloved mlp;fim.
Give it a chance, if you like it, like it, if you don't like it, don't like it

And now stop crying

Tell me why this concept art is made using a different animation style than the shows? Or why it looks more like a flash creation than the other promotional materials did, even when leaked?

In short, I'm more than 80% sure that this pic is a fake.