Rule 34 - 2021 2:1 Animal Genitalia Animal Penis Ball Gag Balls Black Body Black Hair Black Penis Black Tail Bodily Fluids Bound Bridle Building Dappled Fur Detailed Background Digital Media (artwork) Draft Horse Equid Equine Equine Penis Erection Facial Markings Feathering Fence Feral Friesian Fur Gag Genital Fluids Genitals Green Eyes Group Hair Head Markings Horse Huskii-s Juhan (alisian) Lamp Lantern Legs Tied Looking At Another Looking Back Looking Down Male Mammal Mane Markings Mat (mbh98) Mottled Mottled Balls Mottled Genitalia Mottled Penis Night Night Sky Penis Precum Raised Leg Raised Tail Rocco (alisian) Sky Spread Legs Spreading Star Starry Sky Teeth Trio