FURVERT!

ageplay anthro blush canid canine canis clean_diaper clothed clothing diaper diaper_only dingo domestic_dog embarrassed husky hybrid infantilism karo male mammal nordic_sled_dog pupspace roleplay simple_background solo spitz spots tail topless wearing_diaper white_background white_diaper

1:1 4_toes 5_fingers anthro breasts butt canid canine casual_nudity demicoeur digital_media_(artwork) digitigrade english_text feet female fingers fluffy fluffy_tail genitals hybrid katia_(demicoeur) looking_at_viewer mammal medium_breasts model_sheet nipples nude pawpads pink_pawpads profanity red_nipples red_vulva simple_background smile solo tail text toes vulva yellow_eyes

anthro biped black_hair casual_nudity demicoeur digital_media_(artwork) english_text erection feathers genitals hair hekotoro horn humanoid_genitalia humanoid_penis hybrid kynesene male model_sheet nude penis purple_eyes simple_background solo standing tail tattoo text

anthro biped casual_nudity demicoeur digital_media_(artwork) erection feathers fur genitals gradient humanoid_genitalia humanoid_penis hybrid kynesene long_tail male marangi model_sheet nude penis purple_body purple_eyes purple_fur simple_background solo standing tail tattoo

1:1 2010 anthro areola avian biped bird breasts butt canid canine canis casual_nudity color_swatch corvid corvus_(genus) crow demicoeur digital_media_(artwork) english_text eyes_closed female fur genitals green_eyes grey_body grey_fur hybrid kana_(demicoeur) mammal model_sheet nipples nude oscine passerine profanity simple_background slim small_breasts smile solo standing tail text vulva wide_hips wolf

anthro aquatic breasts cephalopod chibi coleoid female fish hybrid mollusk netsuko nipples non-mammal_breasts non-mammal_nipples octopodiform shark solo sukebepanda tail tentacles

abs animal_genitalia animal_penis anthro balls biceps big_balls big_penis digital_media_(artwork) equid equine erection freckles_(artist) genitals horse huge_penis hybrid_genitalia hybrid_penis hyper hyper_genitalia hyper_penis male mammal muscular muscular_anthro muscular_male nude pecs penis pose solo tail thick_penis

2007 anthro art_dragon bemani bottomwear breasts bulge clothing copyright_symbol dance_dance_revolution dragon duo fayd female greyscale hair high_waisted_bottomwear high_waisted_shorts horn hybrid kencougr konami macro male mammal mephitid monochrome mythological_creature mythological_scalie mythology nipple_slip nipples non-mammal_breasts non-mammal_nipples rhythm_game scalie shorts skunk symbol tail tenting wardrobe_malfunction

2011 abs all_fours anal anal_penetration anthro ass_up backsack balls baseball_cap bed bedroom biceps big_balls big_penis bison black_penis blue_eyes bodily_fluids bottomless bovid bovine butt butt_grab chest_tuft clenched_teeth close-up clothed clothing conditional_dnp cum cum_in_ass cum_inside digital_media_(artwork) digitigrade duo erection everquest eyes_closed fenrir_(rrowdybeast) from_behind_position front_view fur furniture genital_fluids genitals green_body green_scales hand_on_butt hat headgear headwear hi_res hybrid iksar inside kneeling male male/male male_penetrated male_penetrating male_penetrating_male mammal muscular nude on_bed one_eye_closed orgasm pecs penetration penis perineum pillow scales scalie scappo sex shirt spread_legs spreading ssvanti sweat tail tank_top teeth text topwear tuft

antennae_(anatomy) anthro avian beak biped bird black_background blue_eyes claws clothing erection feathers flaccid fur galliform genitals horn hybrid kneeling looking_at_viewer male markings navel niccals nipples nude peacock_feather peafowl penis penis_base phasianid pinup pitre pose purple_body purple_feathers purple_fur purple_nipples purple_penis quail simple_background solo speedo swimwear undressing white_markings yellow_claws yellow_horn

2012 3_toes andromorph andromorph/male andromorph_penetrated anthro blue_insides blue_nipples blue_tongue blue_vulva bodily_fluids bridge_piercing bull_terrier canid canine canis claws clitoral_hood clitoris cum cum_in_uterus cum_in_vagina cum_inside cumshot cutaway dareon domestic_dog duo ejaculation erection facial_piercing feet felid fluffy fur genital_fluids genitals hindpaw hunting_dog hybrid impregnation internal intersex intersex/male intersex_penetrated interspecies jakthedrox knot knotting legs_up lizard lying male male_penetrating male_penetrating_andromorph male_penetrating_intersex mammal muscular muscular_male nipples nose_piercing nude on_back orgasm pantherine paws peable penetration penile penile_penetration penis penis_in_vagina piercing piledriver_position reptile scalie sex spread_legs spreading tail terrier tiger toe_claws toes tongue unusual_insides uterus vaginal vaginal_knotting vaginal_penetration vulva

2012 5:4 anthro antlers big_breasts bioluminescence blue_hair blush breasts clothing female genitals glowing hair hi_res horn hybrid jackalope kemono lagomorph legwear leporid long_ears looking_at_viewer mammal nude purple_eyes rabbit shikoyote solo spread_legs spreading tail thigh_highs vulva wings wolpertinger

2012 abstract_background after_sex andromorph andromorph/male andromorph_on_top anthro black_penis blue_tongue bodily_fluids butt cowgirl_position cum cum_in_vagina cum_inside cum_on_butt cum_on_penis cum_string dareon digitigrade dragon duo erection felid from_front_position fur furred_dragon furred_scalie genital_fluids genitals hair hybrid intersex intersex/male intersex_on_top interspecies jakthedrox knot male male_on_bottom male_penetrating mammal messy mythological_creature mythological_scalie mythology nude on_bottom on_top pantherine penetration penis reptile scalie sex simple_background sovy straddling tail tiger tongue tongue_out vaginal vaginal_penetration vulva

2012 abdominal_bulge all_fours amione anthro ass_to_ass ass_up avian backsack balls big_breasts bird breasts duo erection fangs feathered_wings feathers female female_penetrated furball genitals graphite_(artwork) gynomorph gynomorph/female gynomorph_penetrating gynomorph_penetrating_female hybrid intersex intersex/female intersex_penetrating intersex_penetrating_female interspecies jonesy kaisgaru knot lagomorph leporid lying mammal monochrome nude on_side penetration penile penile_penetration penis penis_backwards penis_in_vagina rabbit raised_tail sabertooth_(anatomy) sex side_boob sketch spread_legs spreading tail teeth traditional_media_(artwork) vaginal vaginal_penetration vulva wings

2012 animal_genitalia animal_penis black_nose blonde_hair blondefoxy blue_eyes blush brown_body brown_feathers brown_fur canid canine duo ear_piercing erection fangs feathered_wings feathers female feral feral_on_feral fox fur genitals hair hybrid hybrid_genitalia hybrid_penis knot knotted_penis lucky_(blondefoxy) lying male male/female mammal nude on_back open_mouth paws penile_spines penis piercing pink_penis simple_background tail teeth tongue tongue_out wings yellow_body yellow_fur

4_toes anthro blue_body blue_fur canid canine canis claws dipstick_tail duo feet foot_fetish foot_play footsie fox fur green_eyes hand_holding hindpaw humanoid_hands hybrid kenkofolfoon male male/male mammal markings pawpads paws procyonid raccoon romantic romantic_ambiance signature tail tail_markings toe_claws toes valkoglacies wolf yaoifairy

anal anthro bulge canid canine claws dragon duo erection fox from_behind_position genitals hi_res hybrid inflation jak_the_drox jakthedrox kneeling male male/male male_penetrated male_penetrating male_penetrating_male mammal monochrome mythological_creature mythological_scalie mythology nude overweight panzerdraco penetration penis pump scalie sex tail

2012 andromorph andromorph/male andromorph_penetrated anthro asphyxiation avalore barbel_(anatomy) belly big_belly bodily_fluids brown_and_white cum cum_in_uterus cum_in_vagina cum_inside cumshot digital_drawing_(artwork) digital_media_(artwork) dragon duo ejaculation entwined_tails erection feathered_wings feathers flesh_whiskers forced from_behind_position genital_fluids genitals hybrid impregnation impregnation_view internal intersex intersex/male intersex_penetrated jakthedrox knot knotting male male_penetrating male_penetrating_andromorph male_penetrating_intersex membrane_(anatomy) membranous_wings monochrome multiple_ova mythological_creature mythological_scalie mythology nude orgasm ovum penetration penis pinned rape red_and_white scalie sex simple_background sketch sperm_cell tail tail_coil uterus vaginal vaginal_knotting vaginal_penetration white_background wings zith

anklet anthro anthrofied bed bracelet canid canine clothed clothing daedalusui female fire furniture garter_straps generation_2_pokemon genitals horn houndoom hybrid jewelry legwear lingerie looking_at_viewer mammal monochrome nightgown nintendo pillow pinup pokemon pokemon_(species) pokemorph pose ribbons skimpy solo stockings tail tail_tuft teddiette thigh_highs tuft vulva

all_fours anthro big_breasts black_penis bodily_fluids breasts butt canid canine canis chimangetsu chinese_crested_dog conditional_dnp cum cumshot digital_media_(artwork) doggystyle domestic_dog duo ear_piercing ejaculation erection eyes_closed felid female from_behind_position genital_fluids genitals hairless hairless_dog herm herm/female herm_penetrating humanoid_genitalia humanoid_penis hybrid intersex intersex/female intersex_penetrating kadath liger lion looking_at_viewer mammal messy nipples nude open_mouth orgasm pantherine penetration penis piercing sackless sex shelby_(chimangetsu) shitora_(chimangetsu) slim stripes tail toy_dog vaginal vaginal_fluids vaginal_penetration vaginal_squirting vaginal_squirting_while_penetrated vulva

2012 anthro big_breasts black_penis black_vulva breasts canid canine canis chimangetsu chinese_crested_dog domestic_dog duo erection felid feline female genitals graphite_(artwork) gynomorph hairless hairless_dog harumi herm herm/female hi_res hybrid intersex intersex/female larger_gynomorph larger_intersex liger lion mammal monochrome nipples nude pantherine penis sackless shelby_(chimangetsu) shitora_(chimangetsu) size_difference slim smaller_female tail toy_dog traditional_media_(artwork) vulva

2012 anthro big_breasts black_penis black_vulva breasts canid canine canis chimangetsu chinese_crested_dog domestic_dog duo ear_piercing erection felid feline female genitals graphite_(artwork) gynomorph gynomorph/female hairless hairless_dog harumi hi_res hybrid intersex intersex/female kiss_on_lips kissing liger lion mammal markings monochrome nude pantherine penis piercing shelby_(chimangetsu) shitora_(chimangetsu) slim striped_markings striped_tail stripes tail tail_markings toy_dog traditional_media_(artwork) vulva

anthro blonde_hair blue_eyes chinchilla chinchillid clothing female hair hockey hockey_jersey hutchyy hybrid looking_at_viewer mammal mustelid nhl otter panties pittsburgh_penguins purple_clothing purple_panties purple_underwear rodent sambers smile solo sport tail underwear

2012 5_fingers anthro back_wings biped black-backed_jackal black_nose blue_hair bodysuit bustier canid canine canis claws clothing collarbone colored_fingernails colored_nails countershade_face countershade_fur countershade_neck countershade_torso countershading dated etuix eyebrow_through_hair eyebrows fairy female fingerless_gloves fingernails fingers footwear fur gloves green_eyes green_fingernails green_nails hair handwear hybrid insect_wings jackal legwear leotard lepidopteran_wings lingerie long_hair looking_at_viewer mammal nails philtrum pink_toe_claws pinup pose pupils sitting skinsuit socks solo stockings strapless_clothing strapless_leotard tail tight_clothing toe_claws toeless_footwear toeless_socks translucent translucent_hair watermark wings

anthro blue_eyes breasts brown_hair canid felid female flynx flynx-flink genitals hair hybrid leopard leopard_spots mammal melanistic nipples nude pantherine slightly_chubby solo spots tail vulva

2012 anthro arm_warmers armwear bandai_namco black_sclera canid canine clothing countershading crossover digimon digimon_(species) dipstick_tail equid equine feathered_wings feathers female feral fur hair hasbro hybrid mammal markings mostly_nude multicolored_body multicolored_fur multicolored_tail my_little_pony mythological_creature mythological_equine mythology pegasus ponification pupils quadruped renamon ryunwoofie signature slit_pupils solo tail tail_markings two_tone_body two_tone_fur two_tone_tail white_body white_fur white_hair white_tail wings year yellow_body yellow_fur yellow_tail yellow_wings yin_yang

2012 anthro aquatic big_breasts biped breasts cetacean dolphin dragon-heart female fin front_view full-length_portrait graphite_(artwork) headshot_portrait huge_breasts hybrid hyper hyper_breasts julie_(brawlingcastform) lined_paper mammal model_sheet monochrome multiple_images multiple_poses oceanic_dolphin orca portrait pose rear_view side_boob side_view simple_background sketch solo standing tail tail_fin three-quarter_view toothed_whale traditional_media_(artwork)

2012 anthro aquatic big_breasts blush breast_squish breasts breasts_frottage cetacean character_name dialogue dolly_(dragon-heart) dolphin dragon-heart duo english_text female huge_breasts hybrid hyper julie_(brawlingcastform) mammal oceanic_dolphin orca squish text toothed_whale traditional_media_(artwork)

2012 4_toes aquatic artist_collaboration big_ears big_feet black_body black_hair black_sclera blue_eyes blue_nipples blue_theme blue_tongue breasts bubble claws clenched_teeth dragon duo erection eyes_closed feet fellatio female fish flippers fully/fully_submerged fully_submerged genitals glowing green_claws grey_body hair hand_on_head handjob happy happy_sex hi_res horn hybrid licking long_tongue looking_pleasured male male/female markings multicolored_body mythological_creature mythological_scalie mythology nipples notched_ear nubbed_penis nude oral ozi-rz penile penis penis_lick scalie sex sex_in_water short_hair side_view tail teeth toes tongue tongue_out tonguejob underwater underwater_sex water white_hair zedzar

2012 adenine anthro arm_markings bent_over big_butt biped blush breasts butt canid canine conditional_dnp digital_drawing_(artwork) digital_media_(artwork) facial_markings feet female fluff-kevlar fluffy fluffy_tail fox genitals hair head_markings hindpaw hybrid looking_at_viewer mammal markings masturbation nipples nude paws raised_tail simple_background solo tail vaginal vaginal_masturbation vulva white_background

2012 alternative_fashion anthro big_breasts bisexual_lighting blue_eyes breasts casual_nudity coontail_hair cybergoth disc disc_jockey dj_ravi electronics female female_anthro goth hair headphones hi_res horn hybrid kero_tzuki mammal multicolored_hair mustelid nude pink_theme purple_theme record_player solo speaker tail turntable_(decks)

4:3 anthro bent_arm bent_legs calves_up christmas christmas_clothing christmas_headwear clothed clothing crossed_ankles domestic_cat felid feline felis female footwear grey_eyes hat headgear headwear holidays holly_(plant) hybrid jiinnxx khinta knock-kneed legs_together legwear lying mammal nix_rayne on_front panties plant pose raised_calf santa_hat socks solo tail toeless_footwear toeless_socks topless underwear

anthro anubian_jackal areola bottomwear breasts brown_hair canid canine canis cherushi cherushi_(character) clothed clothing eyes_closed felid feline female freedom garter_belt garter_straps hair hybrid jackal mammal miniskirt navel nipples serval skirt solo tail teeth topless torn_clothing undressing

anthro black_penis blue_body blue_eyes blue_fur butt canid canine canis digital_media_(artwork) dragon erection fur furred_dragon furred_scalie genitals hybrid kusacwolf lockworkorange looking_at_viewer male mammal mythological_creature mythological_scalie mythology nude penis raised_leg scalie shaded side_view solo tail wolf

2012 2_horns 2_the_ranting_gryphon 2d_animation 3:2 aerosol_can ambiguous_gender animated ant ant_trail anthro arthropod avian bathroom bathtub billboard blue_sky brunhilda_shepherd_(blitz) building camera canid canine canis clock cloud crash death detailed digital_media_(artwork) disgust domestic_dog domestic_ferret dragolot_(tirrel) dragon driveway electricity electrocution english_audio english_text explosion eyewear ezra_shorts_(kuddlepup) feathered_wings feathers fender_(furaffinity) feral fire flash fox funday_pawpet_show furniture german_shepherd glasses grin group gryphon hand_on_horn herding_dog horn horn_grab house hybrid hymenopteran insect lineless loop male mammal membrane_(anatomy) membranous_wings milo_(tirrel) movie_set multiple_scenes music music_video mustelid musteline mutt_barker_(herbie_hamill) mythological_avian mythological_creature mythological_scalie mythology name_parody nude on_toilet outside parody pastoral_dog poink_t._weasel_(jackrabbit) procyonid puppet puppet_show raccoon ridged_horn rummage_raccoon_(randy_fox) scalie shelf sign sky smile song sound sound_warning spray_can spraying table talk_show text throwing_character tirrel todd_ferret_(kuddlepup) toilet true_musteline weasel window wings yappy_fox_(randy_fox)

anthro anus bodily_fluids breast_size_difference breasts canid canine canis chimangetsu chinese_crested_dog cum domestic_cat domestic_dog ear_piercing erection felid feline felis female foursome genital_fluids genitals graphite_(artwork) group group_sex hairless hairless_dog harumi herm hybrid intersex interspecies liger lion male male/female male_penetrating mammal monochrome nude pantherine penetration penis piercing sex shelby_(chimangetsu) shitora_(chimangetsu) sketch slim small_breasts tail tiger toy_dog traditional_media_(artwork) vaginal vaginal_penetration vulva

anthro bite cuddling duo ear_bite felid feline female hair hug hybrid leopard leopard_spots looking_at_viewer lynx male male/female mammal monochrome nude pantherine pira ponytail sketch snow_leopard spots tail

2012 aezen agamid animal_genitalia anthro balls bearded_dragon bodily_fluids breasts canid canine canis clitoris close-up double_penetration double_vaginal erection eyes_closed felid feline female fox genital_close-up genital_fluids genitals group group_sex horn hybrid iggi iggi_eastwind interspecies leopardus lizard low-angle_view male male/female mammal nude ocelot penetration penis penis_close-up reptile sandwich_position scalie sex sheath tail tanek_eros threesome tongue trio vaginal vaginal_fluids vaginal_penetration vulva vulva_close-up wolf

2012 4:3 4_toes 5_fingers abs anal anthro areola armband armpit_hair athletic athletic_anthro athletic_female balls bangs bare_breasts bdsm belt big_balls big_breasts black_nose blonde_hair blue_claws blue_eyes blue_hair blush bodily_fluids body_hair bound breasts brown_armband brown_body brown_chaps brown_fur canid canine canis chaps chest_tuft claws collarbone cum cum_in_ass cum_inside cum_on_chest cum_on_ground cum_on_leg digitigrade duo equid equine erection feet female fenrir_lunaris finger_claws fingers fluffy fluffy_tail fox foxystallion from_behind_position front_view fur genital_fluids genitals glans green_eyes grey_body grey_fur grey_hooves grey_tail hair hand_on_back hands_tied hogtied hooves horse hybrid interspecies lassie_lunaris legs_tied long_hair looking_back male male/female mammal mostly_nude multicolored_body multicolored_fur multicolored_hair muscular muscular_anthro muscular_male nipples nude open_mouth orange_body orange_fur pecs penis pink_areola pink_glans pink_nipples pink_penis pubes raised_leg raised_tail restrained rope rough_sex sex shaded simple_background snout standing tail tan_background tan_body tan_fur three-quarter_view toe_claws toes tuft two_tone_body two_tone_fur two_tone_hair unguligrade white_balls white_body white_fur white_hair white_tail wishbone_mouth wolf yellow_tail

1:1 2012 anthro blue_eyes breasts demon dragon female genitals hi_res horn hybrid lemur lunacatta_(character) mammal membrane_(anatomy) membranous_wings mythological_creature mythological_scalie mythology nipples nude primate ring-tailed_lemur scalie simple_background siroc solo strepsirrhine tail vulva wings

1:1 2011 3_toes 4_toes animal_legs anthro arctic_fox barefoot bottomwear bottomwear_down breasts canid canine chimera clothed clothing duo erection eye_contact facial_piercing feet female female_penetrated fibonacci fox genitals hi_res hybrid interspecies lip_piercing looking_at_another male male/female male_penetrating male_penetrating_female mammal nipples nude pants pants_down partially_clothed penetration penile penile_penetration penis penis_in_vagina piercing plantigrade scalie sex siroc soles tail toes true_fox vaginal vaginal_penetration

1:1 3_toes 4_toes animal_legs anthro arctic_fox barefoot canid canine chimera claws clothing dress duo feet female fibonacci fox hi_res hybrid kissing male male/female mammal plantigrade scalie siroc tail toes true_fox

anthro anubian_jackal aquatic asterozoan avian bird breasts canid canine canis censored convenient_censorship duo echinoderm female feral gull hair hybrid jackal kyander lari larid looking_at_viewer mammal nude pinup pose red_hair solo_focus starfish starfish_(accessory) starfish_bra tail tail_tuft tuft

anthro anus big_breasts big_butt blue_vulva breasts butt crystal-for-ever digital_media_(artwork) eddie_(dessy) female genitals hi_res hybrid looking_at_viewer mammal nipples nude piercing pillow solo tail vulva

anthro anus big_breasts big_butt biped blue_eyes blue_vulva blush bodily_fluids breasts butt crystal-for-ever digital_media_(artwork) eddie_(dessy) female genital_fluids genitals hair hi_res hybrid looking_at_viewer mammal nipples nude piercing sex_toy solo tail vaginal_fluids vulva white_hair

2012 abs anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro anthro_penetrating_female areola barbell biceps big_breasts black_body black_fur black_hair black_nose blue_body blue_fur blue_hair bodily_fluids breast_squish breasts canid canine canis clenched_teeth cowgirl_position cum duo erection exercise female female_on_top female_penetrated fluffy fluffy_tail from_front_position fur genital_fluids genitals grey_body grey_fur greywolf_blacksock gynomorph gynomorph/female gynomorph_on_bottom gynomorph_penetrating gynomorph_penetrating_anthro gynomorph_penetrating_female hair holding_object hopey humanoid_genitalia humanoid_hands humanoid_penis humanoid_vulva hybrid iggi intersex intersex/female intersex_on_bottom intersex_penetrating intersex_penetrating_anthro intersex_penetrating_female licking licking_lips long_hair lying mammal multicolored_body multicolored_fur muscular muscular_anthro muscular_female muscular_gynomorph muscular_intersex nipples nude nude_workout on_back on_bottom on_top orange_eyes penetration penile penile_penetration penis penis_in_vagina pink_areola pink_nipples pink_penis pink_tongue sex sexercise squish tail teeth tongue tongue_out two_tone_body two_tone_fur vaginal vaginal_penetration vulva weightlifting weights white_body white_fur wolf workout

anthro bikini blue_eyes breasts canid canine clothed clothing domestic_cat felid feline felis female fox green_eyes hair heterochromia hose hybrid juzztie kcravenyote looking_at_viewer mammal multi_tail red_hair sakiko skimpy solo string_bikini swimwear tail translucent translucent_clothing two-piece_swimsuit water wet

anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia anthro blue_eyes blush breasts byakurai_tora duo epicwang erection female fluffy genitals hybrid male mammal murchetta nude penis sergal sergal_penis sheath sidgi tail tapering_glans

4_toes 5_fingers anisodactyl anthro anyare avian avian_feet beak bedroom_eyes biped bird black_claws black_nipples black_vulva blue_body blue_feathers blue_wings bodily_fluids breasts butt chest_tuft claws cloud_(amaterasu1) cockatoo crossed_legs feather_hair feathered_wings feathers feet female fingers front_view genital_fluids genitals half-closed_eyes hand_on_breast hi_res hybrid looking_at_viewer macaw medium_breasts multicolored_body multicolored_feathers multicolored_wings narrowed_eyes neotropical_parrot nipples non-mammal_breasts non-mammal_nipples nude parrot pinup pose pseudo_hair purple_body purple_eyes purple_feathers seductive simple_background sitting smile solo spix's_macaw toe_claws toes true_parrot tuft two_tone_wings vaginal_fluids vulva white_body white_feathers white_wings wings

anal anal_penetration anthro big_breasts bound breasts butt canid canine canis domestic_dog double_anal double_penetration female genitals hair hi_res huge_breasts husky hybrid jackie_shay lagotrope mammal multiple_insertions nipples nordic_sled_dog nude penetration red_hair sex shay_feral_(colorist) solo spitz tail tentacle_sex tentacles triple_anal triple_penetration vulva wide_hips wolf