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5_fingers ambiguous_gender ambiguous_penetrated ambiguous_penetration anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro arms_tied ass_up bdsm biped blush bodily_fluids bondage boss_monster_(undertale)bound bovid breasts butt butt_grab caprine cat_o'_nine_tails chromapan cleavage clothed clothing crossgender cum cum_inside cum_while_penetrated dialogue digital_media_(artwork)domestic_cat dominant dominant_gynomorph dominant_intersex duo english_text excessive_cum excessive_genital_fluids eye_roll feathered_wings feathers felid feline felis femboy fingers floppy_ears fti_crossgender fur genital_fluids gynomorph gynomorph/ambiguous gynomorph_penetrating gynomorph_penetrating_ambiguous hair half-closed_eyes hand_on_butt hands_behind_back hi_res holding_object inner_ear_fluff intersex intersex/ambiguous intersex_penetrating intersex_penetrating_ambiguous interspecies larger_dom larger_gynomorph larger_intersex leotard light_body light_fur long_hair looking_at_another looking_pleasured male_(lore)mammal mature_anthro mature_gynomorph mature_intersex multicolored_body multicolored_fur narrowed_eyes nicoya open_mouth paddle pale_fur patreon penetration pink_nose purple_body purple_fur sex signature size_difference smaller_ambiguous smaller_penetrated standing submissive submissive_ambiguous text toriel tuft two_tone_body two_tone_fur undertale undertale_(series)url whip white_body white_fur white_hair wings