FURVERT!

1:1 anal anal_penetration animal_genitalia animal_penis anthro anthro_on_feral anthro_penetrated ass_up backsack balls bestiality biped canid canine dominant duo equid equine equine_genitalia equine_penis erection fellatio feral feral_penetrating feral_penetrating_anthro fully_sheathed genitals horse larger_dom male male/male male_penetrated male_penetrating male_penetrating_male mammal medial_ring monochrome nose_wrinkle oral penetration penile penis penis_tip pubes quadruped rear_view sex sheath sheathed_while_penetrated size_difference sketch smaller_penetrated subject_(artist)