Recalcitrant Pony Boy by Arden Chase

His masters say he's untrainable, but Master Iain could never resist a challenge. When he takes his new pony in hand and by the bit, where he leads is somewhere neither of them expects. An erotic tale of a master and his pony, set in a world of toys, pony play, and a master/slave dynamic. This story does not intend to depict the safe practice of BDSM! 14,000 words