The Big ImageBoard (TBIB) - 5 fingers abs animal genitalia animal penis ankles tied anthro armpit hair balls bdsm biped bit gag black balls black eyebrows black hair black hooves black nipples black penis black tail body hair bondage bound bucephalus chastity cage chastity device digital media (artwork) duo equid equine equine penis erection eyebrows fingers flaccid fur gag genitals green eyes grey body grey fur grin hair hands behind back harness harness bit gag harness gag holding object holding whip hooves horse looking down low-angle view lying male mammal metal chastity cage muzzle (object) ninetht nipple piercing nipples on side pecs penis perineum petplay piercing pink penis ponyplay red body red fur red stripes restraints roleplay rope rope bondage short hair smile striped arms striped body striped fur stripes whip worm's-eye view