Rule 34 Dev - abs animal_genitalia animal_penis annoyed anthro balls bdsm biceps chain chained_collar clenched_teeth equine_genitalia equine_penis erection feet genitals hair holding_chain humanoid_feet male muscular muscular_male muscular_sub nipples nude pecs penis plantigrade pubes purple_hair quads reclining sitting solo submissive teeth tangdog2 equid equine horse mammal hi_res|21966145425