FURVERT!

1:1 against_surface against_wall ambiguous_gender anal anal_penetration anus arched_back butt butt_smother equid equine eye_roll facesitting feral guide_lines hi_res hooves horse mammal manahallowhound mane monochrome open_mouth penetration pinned pinned_to_wall puffy_anus side_view simple_background sitting sitting_on_another smothering solo tail