Rule 34 Dev - 2013 blonde_hair blue_fur blush cunnilingus cutie_mark derpy_hooves duo english_text equine female feral friendship_is_magic grey_fur hair heart horse multicolored_hair my_little_pony oral oral_sex pegasus pony rainbow_dash_(mlp) rainbow_hair sex stoney-pony text vaginal_penetration wings yuri|1581496408