Because they are both genders at the same time, always wanton and always seeking out new partners to lure back to their stables of pleasure.
Ad, Advert, Advertisement, Amethyst Mare, Anal, Anal Sex, Arian Mabe, Ass slapping, Big butt, Breeding, Commiss.io, Commissio, Consensual, Consent, Cum Inflation, Cunnilingus, Deep Penetration, Domination, Domination/Submission, Ebook teaser, Epub, Equine, Erotic, Erotic ebook teaser, Exhibitionism exhibitionist, Fantasy, Feral, Gangbang, Groping, Group, Group Sex, Harem, Horse, Humanoid, Hyper, Hypercock, Hyperphallic, Impregnation, Inflation, Intelligent Feral, Large Cock, Large cock and balls, Large hips, Licking, Light Cum Inflation, Light inflation, Love, Lust, M/F, Male/Female, Mare, Mating, Messy, Messy Cum, Messy sex, Mutual pleasure, Non-Anthro, Oral, Oral Sex, Orc, Orgy, Outdoors, Passion, Pony, Preview Permanent, Public, Relationships, Repub, Republished, Romance, Rough, Rough Sex, Rule 34, Short Story, Size Play, Smashwords, Story, Straight, Straight Sex, Stretching, Stud cock, Submission, Teasers, Teasing, Teat play, Udder play, Vaginal, Vaginal Sex, Very large cock, Voyeurism, World of Warcraft, Wow, big ass, consenting, erotica, herd, impreg, large balls, public sex, slapping, stud, teaser, teats, tight fit, udders, voyeur