5:3 animal_genitalia animal_penis anthro balls base_one_layout basic_sequence blue_and_white bodily_fluids bovid bovine cattle cock_transformation digital_drawing_(artwork) digital_media_(artwork) e621 equine_genitalia equine_penis four_frame_image four_frame_sequence genital_fluids genitals linear_sequence male mammal monochrome mot one_row_layout penis penis_horn precum pseudo_horn sequence sketch solo transformation transformation_sequence what what_has_science_done

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