The Pony API

animated, artist:subjectnumber2394, balancing, bipedal, cape, clothes, cutie mark, duo, epic fight, eyes closed, female, fight, gif, hat, hoofy-kicks, internet fight, mare, open mouth, pony, raised leg, rearing, safe, screaming, shadow, simple background, sissy slap fight, tongue out, trixie, trixie's cape, trixie's hat, twilight sparkle, unicorn, unicorn twilight, white background

API docs