FURVERT!

2023 anthro axd-l big_breasts black_sclera blue_eyes blue_hair breasts clothing colored digital_media_(artwork) dragon female gradient_background gradient_hair hair hi_res huge_breasts huge_thighs hyper hyper_breasts looking_at_viewer mythological_creature mythological_scalie mythology open_mouth purple_hair regalia_(averyshadydolphin) scalie scarf simple_background solo sweater thick_thighs tongue topwear wide_hips

1586 16th_century absurd_res ancient_art anus armor backsack balls beard bridle butt cape clothed clothed_human clothed_male clothing cloud detailed_background duo_focus equid equine equine_anus facial_hair feral fight genitals group hair hatching_(art) headgear helmet hendrick_goltzius hi_res holding_lance holding_melee_weapon holding_object holding_polearm holding_shield holding_weapon hooves horse horseshoe huge_filesize human humanoid_hands lance latin_text looking_back lying male male_feral male_human mammal mane melee_weapon monochrome mustache on_side outside plant polearm public_domain quadruped rear_view reins riding saddle shaded shield shrub standing stirrups sword tail text three-quarter_view titus_manlius_imperiosus_torquatus traditional_media_(artwork) translation_request underhoof unguligrade wall_(structure) weapon

anal_beads anthro armwear blindfold blush bow_ribbon christmas clothing dialogue dildo elbow_gloves english_text eulipotyphlan gift gloves handwear hedgehog hi_res holidays legwear lingerie lube_bottle male mammal meamyx panties pattern_clothing pattern_legwear pattern_stockings pawpads questionable_consent restraints sega sex_toy solo sonic_the_hedgehog sonic_the_hedgehog_(series) spreader_bar stockings striped_clothing striped_legwear striped_stockings stripes text underwear

5_fingers anthro athletic biped blue_clothing blue_eyes blue_markings bottomwear brick brick_wall brown_body brown_fur brown_hair canid canine canine_tail canis clothed clothing detailed_background digital_drawing_(artwork) digital_media_(artwork) fang_(rubixfpv) fingers fluffy fluffy_tail fur hair hand_behind_head hand_on_hip hi_res male mammal markings messy_hair multicolored_body muscular nipples pecs purple_background raised_arm rubixfpv shorts simple_background solo standing stripes tail tan_body tan_fur topless two_tone_body wall_(structure) white_bottomwear white_clothing wolf

2026 anthro arthropod beard bodily_fluids canid canine capuchin_monkey cebid centipede chain chewoo_(yoohoo_and_friends) digital_drawing_(artwork) digital_media_(artwork) drooling english_description english_text facial_hair father_time_(yoohoo_and_friends) female fennec_fox fox gabbadabbadoo galago gradient_background group half-length_portrait haplorhine hi_res hourglass_(object) humanoid ibispaint_(artwork) lemmee_(yoohoo_and_friends) lemur lorisoid lyrics male mammal monkey myriapod nails new_world_monkey pammee_(yoohoo_and_friends) portrait primate rodent roodee_(yoohoo_and_friends) saliva sciurid sharp_nails signature simple_background sparkee_(yoohoo_and_friends) strepsirrhine teeth text tongue tongue_out tree_squirrel true_fox viking_helmet x_eyes yoohoo_(yoohoo_and_friends) yoohoo_and_friends

anthro blush chien-pao clothing digital_drawing_(artwork) digital_media_(artwork) duo elio_(pokemon) fan_character felid feline footwear generation_7_pokemon generation_9_pokemon hi_res legendary_pokemon lion male male/male mammal nasthane nintendo pantherine pokemon pokemon_(species) size_difference sketch smile snow_leopard socks solgaleo tagme

1911 20th_century ambiguous_gender ancient_art arthropod avian bird blackface clarence_marks conducting_baton cymbals drum drumstick_(musical) elephant elephantid english_text feral fly_(animal) giraffe giraffid haplorhine herman_paley hi_res human insect james_kendis male male_human mammal monkey mosquito musical_instrument musical_note musical_symbol onomatopoeia open_mouth palm_tree parrot percussion_instrument photography_(artwork) plant primate proboscidean public_domain sheet_music singing sound_effects symbol text traditional_media_(artwork) tree tusks

2024 anthro beard blue_clothing blue_topwear brown_eyebrows brown_mane clothing countershade_face countershade_hands countershade_legs countershade_torso countershading digital_drawing_(artwork) digital_media_(artwork) eyebrows facial_hair felid fingers front_view grey_beard grey_facial_hair grey_mustache half-length_portrait hi_res kingarthur_i lion looking_at_viewer male mammal mane mostly_nude mostly_nude_anthro mostly_nude_male multicolored_body muscular muscular_anthro muscular_male mustache navel nipples open_mouth open_smile pantherine pecs portrait pupils purple_background simple_background slightly_chubby slightly_chubby_anthro slightly_chubby_male smile smiling_at_viewer solo tan_body tan_countershading topwear trapezius two_tone_body white_sclera yellow_body yellow_eyes

2026 5_fingers animal_ears animal_humanoid balls bent_over biped bodily_fluids cat_humanoid clothing dialogue english_text felid felid_humanoid feline feline_humanoid fingers genital_fluids genitals genshin_impact hair hi_res human human_on_humanoid humanoid humanoid_genitalia humanoid_hands humanoid_penis interspecies legwear male male/male male_human male_humanoid mammal mammal_humanoid matemi mihoyo nude_human nude_male penis precum purple_ears purple_hair purple_tail slava_(matemi) speech_bubble standing tail text

2022 anthro belly black_arms black_body black_claws black_head black_legs black_tail black_wings blue_eyes bulge claws clothing dragon european_mythology grey_background grey_belly hi_res kelenkenwithfangs male mythological_creature mythological_scalie mythology scalie signature simple_background solo tail underwear watermark western_dragon wings wyvern yellow_clothing yellow_underwear

anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro areola balls biped blush breasts canid canine canis clothed clothing dialogue domestic_cat domestic_dog english_text erection felid feline felis female female_penetrated fur genitals good_girl hair hi_res male male/female male_penetrating male_penetrating_female mammal nipples oral oral_penetration penetration penile penile_penetration penis sex snazzle_snapp speech_bubble standing text tongue vaginal vaginal_penetration vulva white_body white_fur

anthro big_breasts bovid breasts bulge canid canine caprine caprine_demon clothing dahliathefox demon duo expansion female feminization fox fox_spirit genitals goat goat_demon halo huge_breasts hyper hyper_breasts inflated_breasts latex latex_clothing latex_underwear male male/female mammal pentalyos_(dahliathefox) phylia_(dahliathefox) talisman underwear vulva

alien animal_genitalia bigl1463 bioware bodily_fluids celius_acillion electronic_arts erection genital_fluids genital_slit genitals hi_res kmeeling knot knotted_penis looking_at_viewer male mass_effect monochrome nude penis precum reclining solo turian

abstraction_(tadc) anthro balls bedroom_eyes big_balls big_penis bodily_fluids clothed clothing crossdressing cum duo ejaculation evil_jax_(tadc) eyebrows eyelashes frottage genital_fluids genitals glitch_productions glowing glowing_eyes heart_pupils heart_symbol hi_res image_bubble jax_(tadc) lagomorph leporid long_eyelashes maid_headdress maid_uniform male male/male mammal narrowed_eyes overwhelmed penile penis penises_touching rabbit raised_eyebrow scribble_eyes seductive sex smile smirk solomonbnuy speech_bubble the_amazing_digital_circus uniform

anthro anus balls belly big_balls big_balls_small_penis big_belly big_butt black_body black_fur bubble_butt butt claws deltarune demon depths_(deltarune) disproportionate_genitalia erection flaccid friend_(deltarune) fur genitals grower hi_res humanoid innie_anus male multicolored_eyes overweight overweight_anthro overweight_male penis pixelated_text sharplaserdisc signature small_penis smile smiling_at_viewer solo spade_tail tail text undertale_(series)

alien animal_genitalia bigl1463 bioware bodily_fluids electronic_arts erection genital_fluids genital_slit genitals hi_res kmeeling knot knotted_penis looking_at_viewer male mass_effect monochrome nude penis precum reclining solo turian

4_toes 5_fingers anthro big_breasts black_hair black_nose breasts brown_body brown_fur clothed clothed_anthro clothed_female clothing dress feet female fingers fur genitals hair hi_res hindpaw huge_breasts humanoid_hands hyena mammal markings nipple_piercing nipple_ring nipples paws piercing ring_piercing sherrabast solo spots spotted_body spotted_fur spotted_hyena toes translucent translucent_clothing translucent_dress vulva

2026 abs anthro areola balls bedroom_eyes big_balls big_breasts big_penis biped blue_eyes blush blush_lines breasts crotch_tuft curvy_figure eulipotyphlan eyelashes facial_piercing genitals gynomorph hair half-erect hands_behind_head head_tuft hedgehog hi_res hourglass_figure huge_penis innansfw intersex long_eyelashes mammal muscular muscular_anthro muscular_gynomorph muscular_intersex narrowed_eyes navel nipples nose_piercing nose_ring penis piercing presenting puffy_areola puffy_nipples red_hair ring_piercing seductive solo tan_body tan_hair thick_thighs tuft vein veiny_penis wide_hips yellow_sclera

2026 abstract_background anthro anus armband backsack balls beard belly big_anus big_balls big_butt big_penis body_hair bowser bracelet bulge butt chest_hair claws clothed clothed/nude clothing collar cross-popping_vein deeroni erection erection_under_clothing eyebrows facial_hair foreskin front_view genitals glans hair hi_res horn humanoid_genitalia humanoid_penis ineffective_clothing jewelry koopa looking_back male mario_bros musclegut muscular muscular_anthro muscular_male narrowed_eyes navel nintendo nude penis perineum pipe presenting presenting_hindquarters pubes rear_view scalie shell sideburns signature simple_background sitting smile solo spiked_armband spiked_bracelet spiked_collar spiked_shell spikes spikes_(anatomy) tenting thick_thighs topless topless_anthro topless_male unretracted_foreskin

2024 4_fingers anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro anthro_pov bodily_fluids breasts canid canine chest_tuft duo eyelashes female female_penetrated fingers first_person_view fur genital_fluids gloves_(marking) hair heart_eyes heart_pupils heart_symbol hi_res inner_ear_fluff long_hair male male/female male_penetrating male_penetrating_female male_pov mammal markings motion_lines multicolored_body navel nipples nude pawpads penetrating_pov penetration penile penile_penetration penis_in_vagina pink_background pink_body pink_eyes pink_fur pink_pawpads seuppi sex simple_background sweat sweatdrop tuft two_tone_body vaginal vaginal_penetration white_body white_fur white_inner_ear white_inner_ear_fluff

anal anal_penetration anthro bdsm belt_bondage belt_collar bodily_fluids bondage bound buttplug canid canine chastity_cage chastity_device clothing collar dripping drone dronesuit femboy flat_chastity_cage fox fox_ears fox_tail gag genital_fluids hair hi_res hoodie latex latex_clothing latex_skinsuit leaking_precum male mammal object_in_ass pelmesh1029 penetration plug_(sex_toy) precum precum_drip sex_toy sex_toy_in_ass sex_toy_insertion skinsuit solo standing tight_clothing topwear vibrator vibrator_in_ass

anal anal_penetration anthro bdsm belt_bondage belt_collar bodily_fluids bondage bound buttplug canid canine chastity_cage chastity_device clothing cock_gag collar dripping drone dronesuit femboy flat_chastity_cage fox fox_ears fox_tail gag genital_fluids hair hi_res hoodie latex latex_clothing latex_skinsuit leaking_precum male mammal object_in_ass pelmesh1029 penetration plug_(sex_toy) precum precum_drip sex_toy sex_toy_in_ass sex_toy_insertion skinsuit solo standing tight_clothing topwear vibrator vibrator_in_ass vorty

anal anal_penetration anthro bdsm belt_bondage belt_collar bodily_fluids bondage bound buttplug canid canine chastity_cage chastity_device clothing cock_gag collar dripping drone dronesuit femboy flat_chastity_cage fox fox_ears fox_tail gag genital_fluids hair hi_res hoodie latex latex_clothing latex_skinsuit leaking_precum male mammal object_in_ass pelmesh1029 penetration plug_(sex_toy) precum precum_drip sex_toy sex_toy_in_ass sex_toy_insertion skinsuit solo standing tight_clothing topwear vibrator vibrator_in_ass vorty x-ray_view

anal anal_penetration anthro bdsm belt_bondage belt_collar bodily_fluids bondage bound buttplug canid canine chastity_cage chastity_device clothing collar dripping drone dronesuit femboy flat_chastity_cage fox fox_ears fox_tail gag genital_fluids hair hi_res hoodie latex latex_clothing latex_skinsuit leaking_precum male mammal object_in_ass pelmesh1029 penetration plug_(sex_toy) precum precum_drip sex_toy sex_toy_in_ass sex_toy_insertion skinsuit solo standing tight_clothing topwear vibrator vibrator_in_ass vorty x-ray_view

2024 anthro avian beak bird black_eyes blue_eyes clothed clothing duo facial_tuft feathers feeding feeding_birds feral food fur generation_7_pokemon generation_8_pokemon grass hair half-closed_eyes hi_res log long_ears mintimus narrowed_eyes nintendo orange_eyes outside pikipek plant pokemon pokemon_(species) scorbunny signature simple_background sitting smile tail text tuft white_background white_body white_fur wings wood yellow_inner_ear

american_mythology anthro antlers ashcroft_"ash"_julian_clifford black_body butt female furniture glowing glowing_eyes hi_res horn human human_on_anthro indigenous_north_american_mythology interspecies lying lying_on_another lying_on_sofa male male/female mammal mythology north_american_mythology on_sofa paws pillow sofa starshade vitaly_s_alexius wendigo

animal_genitalia animal_penis anus areola ball_fondling balls bestiality big_breasts big_butt bodily_fluids breasts butt censored censored_genitalia censored_penis chainsaw_man clothed clothing duo english_text equid equine equine_genitalia equine_penis female feral fondling genitals heart_symbol hi_res horse human human_focus human_on_feral interspecies larger_male makima_(chainsaw_man) male male/female mammal nipples not_furry_focus penis size_difference smaller_female solo_focus sweat sweaty_butt text vulva ykun

2026 anthro anthro_on_anthro big_butt blonde_hair blue_eyes blue_hair blush butt digital_media_(artwork) domestic_cat duo english_text eyes_closed eyewear felid feline felis female from_behind_position fur glasses grey_body grey_fur hair hi_res jason_markova male male/female mammal nude robertge sex simple_background sunnet tail tail_grab text yellow_body yellow_fur

2022 alcohol anthro asian_clothing bedroom_eyes beverage big_breasts biped blush bottomwear breasts bubble canid canine clothed clothing colored detailed digital_drawing_(artwork) digital_media_(artwork) drunk east_asian_clothing fangs feet female female_anthro fox full-length_portrait fur hair hi_res holding_object japanese_clothing kemono kimono long_hair looking_at_viewer mammal multi_tail narrowed_eyes open_mouth portrait pose seductive shaded simple_background solo substance_intoxication tail teeth toes tofffffu tuft white_background white_clothing

2022 anthro asian_clothing breasts canid canine chest_tuft clothed clothing cute_fangs digital_media_(artwork) dipstick_tail east_asian_clothing fangs female female_anthro fox front_view fully_clothed fur green_clothing hair hi_res japanese_clothing kemono long_hair looking_at_viewer mammal markings multi_tail simple_background smile solo tail tail_markings teeth tofffffu tuft white_clothing

2026 anthro areola armband barazoku belly biceps big_belly big_bulge big_muscles big_pecs body_hair border bowser bracelet bulge chest_hair claws clothed clothing cloud collar day deltoids eyebrows eyewear facial_hair footwear hair hand_on_hip happy_trail hi_res holding_eyewear holding_object holding_sunglasses horn huge_muscles jewelry koopa looking_at_viewer male mario_bros musclegut muscular muscular_anthro muscular_male nintendo nipples non-mammal_nipples outside pecs plantigrade pubes quads sand sandals scalie shell shoes simmersand sky smile solo speedo spiked_armband spiked_bracelet spiked_collar spiked_shell spiked_tail spikes spikes_(anatomy) standing stubble sunglasses swimwear tail teeth thick_arms thick_thighs topless topless_anthro topless_male triceps white_border

anthro balls big_balls big_penis brown_body brown_fur butt comic dialogue digital_media_(artwork) duo english_text fur genitals guardians_of_the_galaxy hi_res huge_penis humanoid_genitalia humanoid_penis indigo_park male mammal marvel mrt0ony nude penis procyonid raccoon rambley_raccoon red_sclera rocket_raccoon tail text vein veiny_penis virtual_reality vr_headset yellow_eyes

anthro balls big_balls big_penis bodily_fluids brown_body brown_fur butt comic digital_media_(artwork) duo english_text erection fellatio fur genitals glans guardians_of_the_galaxy hi_res huge_penis humanoid_genitalia humanoid_penis hypnosis indigo_park kerchief low-angle_view male male/male male_penetrated male_penetrating male_penetrating_male mammal markings marvel mind_control mrt0ony neckwear nude oral oral_penetration penetration penile penis procyonid purple_eyes raccoon rambley_raccoon red_sclera rocket_raccoon sex spiral spiral_eyes tail text vein veiny_penis virtual_reality vr_headset yellow_eyes

abdominal_bulge anal anal_penetration anthro balls big_balls big_penis bodily_fluids brown_body brown_fur butt comic cum digital_media_(artwork) duo ejaculation english_text erection foreskin french_kissing fur genital_fluids genitals glans guardians_of_the_galaxy hi_res huge_balls huge_penis humanoid_genitalia humanoid_penis hypnosis indigo_park kerchief kissing male male/male male_penetrated male_penetrating male_penetrating_male mammal markings marvel mind_control mrt0ony neckwear nude oral oral_penetration penetration penile penile_penetration penis penis_in_ass procyonid purple_eyes raccoon rambley_raccoon red_sclera rocket_raccoon sex spiral spiral_eyes tail text tongue tongue_out vein veiny_penis virtual_reality yellow_eyes

after_sex anthro anus balls big_balls big_penis bodily_fluids body_swap brown_body brown_fur butt comic dialogue digital_media_(artwork) duo english_text erection fur genitals guardians_of_the_galaxy hi_res huge_balls huge_penis humanoid_genitalia humanoid_penis indigo_park kerchief male mammal markings marvel mrt0ony neckwear nude penis procyonid purple_eyes raccoon rambley_raccoon red_sclera rocket_raccoon sex tail text vein veiny_penis virtual_reality yellow_eyes

anthro beach blue_eyes bottomwear clothed clothing cloud collar detailed_background ear_piercing erection forward_helix_piercing genitals helix_piercing leash looking_at_viewer male mammal mouth_hold murid murine nephilia outside pants partially_clothed penis penis_poking_out piercing rat rodent rook_piercing sand seaside shirt sky solo tail topwear water

2002 anthro anthro_on_anthro areola athletic balls bangs bed belly blush bodily_fluids breasts butt countershade_genitalia countershade_pecs countershading cum cum_in_vagina cum_inside domestic_cat dominant dr_comet dripping duo erection eyebrows felid feline felis female female_penetrated fur furniture genital_fluids genitals glistening glistening_bodily_fluids hair hand_on_leg hi_res inner_ear_fluff looking_at_another lying male male/female male_penetrating male_penetrating_female mammal messy monotone_pecs nipples nude on_back on_bed open_mouth penetration penile penile_penetration penis penis_in_vagina pillow portrait pubes sex simple_background submissive sweat sweaty_crotch tail text three-quarter_portrait tongue tongue_out tuft vaginal vaginal_penetration vulva white_body white_pecs

2010 4_toes anthro barefoot bear bottomwear canid canine canis chest_tuft clothing colored_pencil_(artwork) crazed-lunatic denim denim_bottomwear denim_clothing duo feet fur giant_panda hi_res jeans kiss_on_lips kissing making_out male male/male mammal pants signature tail toes traditional_media_(artwork) tuft unknown_artist wolf

2004 anthro chasing clothed clothing comic dialogue digital_media_(artwork) electronics english_text game_boy_advance game_boy_advance_sp game_boy_family game_console group hi_res humor male metropolis_(2001) nintendo nintendo_ds nintendo_ds_family nude profanity scott_ramsoomair text url vg_cats

anthro blue_body blue_fur chatin_naidoo female fur hair hi_res jaxinc looking_at_viewer mammal mephitid multicolored_body multicolored_fur outside purple_body purple_fur purple_hair skunk solo tail two_tone_body two_tone_fur water waterfall

absolutely_everyone apple_bloom_(mlp) applejack_(mlp) autumnalone big_macintosh_(mlp) blue_body blue_feathers blue_fur chart cheerilee_(mlp) cutie_mark_crusaders_(mlp) dragon ear_piercing earth_pony english_text equid equine eyeshadow feathered_wings feathers female feral fluttershy_(mlp) friendship_is_magic fur grandfathered_content group hair hasbro hi_res horn horse large_group makeup male mammal mbti multicolored_hair my_little_pony myers-briggs_type_indicator mythological_creature mythological_equine mythological_scalie mythology orange_body orange_feathers pegasus piercing pink_body pink_fur pinkie_pie_(mlp) pony princess princess_celestia_(mlp) princess_luna_(mlp) purple_hair rainbow_dash_(mlp) rainbow_hair rarity_(mlp) royalty scalie scootaloo_(mlp) socionics spike_(mlp) stripes sweetie_belle_(mlp) text trixie_(mlp) twilight_sparkle_(mlp) two_tone_hair unicorn url white_body white_feathers winged_unicorn wings yellow_body yellow_feathers zebra zecora_(mlp)

:< anthro arc_system_works arms_bent asian_mythology beastkin blazblue cat_tail closed_frown clothing east_asian_mythology eye_patch eyewear felid fluffy frown hi_res hood hoodie japanese_mythology jeacn jubei_(blazblue) kaka_(blazblue) male mammal melee_weapon mouth_closed multi_tail mythology nekomata obscured_eyes solo sword tail topwear weapon whiskers wide_stance yokai

ambiguous_gender battle claws crouching desert extreme_size_difference fangs feral front_view group hi_res macro male nagabe nude open_mouth outside running sand scalie size_difference sky spread_legs spreading teeth toe_claws tongue tribal

2012 clothed clothing dress equid equine feathered_wings feathers female feral flower fluttershy_(mlp) friendship_is_magic green_eyes hair hasbro hi_res holivi looking_at_viewer mammal my_little_pony mythological_creature mythological_equine mythology pegasus pink_hair plant quadruped simple_background solo wings yellow_body yellow_feathers

2012 69_position anal anthro anthro_on_anthro bed big_penis canid canine canis domestic_dog duo erection eyes_closed fellating_while_rimmed fellatio furniture genitals grabbing_sheets husky icelyon licking light male male/male male_penetrated male_penetrating male_penetrating_male mammal nordic_sled_dog oral penetration penile penis penis_size_difference rimming rimming_69 rimming_while_fellated sex spitz tail tail_grab tongue tongue_out

2012 69_position anal anthro anthro_on_anthro bed big_penis bodily_fluids brown_body brown_fur brown_hair canid canine canis cum cum_in_mouth cum_inside cum_while_rimming domestic_dog duo erection eyes_closed fellating_while_rimmed fellatio fur furniture genital_fluids genitals grabbing_sheets grey_body grey_fur hair humanoid_genitalia humanoid_penis husky icelyon lamp licking light lying male male/male male_penetrated male_penetrating male_penetrating_male mammal nordic_sled_dog nude on_back oral orgasm penetration penile penis penis_size_difference pillow rimming rimming_69 rimming_while_fellated sex spitz tail tail_grab tongue tongue_out

anthro babs_bunny bodily_fluids buster_bunny cum erection female genital_fluids genitals group handjob lagomorph leporid male male/female mammal penile penis rabbit sex tiny_toon_adventures unknown_artist warner_brothers

2012 aircraft airship alternative_fashion armor blue_body blue_feathers blue_fur clothing cloud english_text equid equine eyewear feathered_wings feathers female feral flying friendship_is_magic fur goggles hair hasbro headgear helmet hi_res hooves jacket leather leather_clothing leather_jacket leather_topwear mammal multicolored_hair multicolored_tail my_little_pony mythological_creature mythological_equine mythology nastylady pegasus ponyville rainbow_dash_(mlp) rainbow_hair rainbow_tail red_eyes solo spread_wings steampunk tail text topwear url vehicle wings

backsack balls bent_over bovid bovid_horn butt caprine caprine_horn drayl drayl_(character) erection femboy foreskin genitals hair hi_res horn humanoid_genitalia humanoid_penis male mammal partially_retracted_foreskin penis presenting ram_horn red_hair sheep smile solo tail