FURVERT!

3_toes abs anthro athletic athletic_anthro athletic_male barefoot biceps big_bulge big_feet bodily_fluids bulge claws clothing diving feet foot_focus fur fur_markings glowing hair hi_res huge_bulge kangaroo long_feet long_hair long_tail macropod male mammal markings marsupial mountain multicolored_body muscular muscular_anthro muscular_male orange_hair outside pecs ravios solo swimming swimwear tail toes underwear water wet xdarkspace

3_toes 4:3 4_toes accessory anthro big_butt big_feet bodily_fluids bulge butt canid canine chair claws clothed clothing computer digital_media_(artwork) drooling duo electronics feet foot_fetish foot_focus fox fur furniture hair hi_res huge_feet inside kangaroo leaning leaning_backward long_feet long_hair luffe_(luffewaffles) macro macropod male male/male mammal marsupial necktie office on_phone open_mouth orange_hair pawpads paws piercing ravios saliva shirt size_difference smaller_male smile smothering sucking tail tight_underwear toes topwear undressing xdarkspace

3_toes abs alley anthro athletic athletic_anthro athletic_male bat big_feet blonde_hair bodily_fluids boots brick brick_wall brown_body claws clothing crossed_feet crossed_legs digital_media_(artwork) door duo eyes_closed feet fingers foot_focus foot_rest footwear fur genitals hair hi_res holding_boots holding_clothing holding_footwear holding_object huge_feet hybrid kangaroo kneeling long_feet long_hair looking_down lying macropod male male/male mammal markings marsupial night nipples nude on_back orange_hair outside paws penis prehensile_feet raining ravios shoe_sniffing shoes size_difference sky smile sniffing sniffing_clothes stairs stoven_(xdarkspace) sweat tail teeth toes wall_(structure) wet wet_body xdarkspace yellow_penis

abs absurd_res accessory animal_genitalia animal_penis anthro athletic athletic_anthro athletic_male ball_tuft balls big_balls big_penis black_hair chest_tuft claws cock_ring digital_media_(artwork) duo equid equine equine_genitalia equine_penis erection fur genital_piercing genitals hair hand_on_chest harness hi_res holding_each_other horse imminent_kiss jewelry kangaroo lips long_hair looking_at_another macropod male male/male mammal marsupial muscular muscular_anthro muscular_male nipple_piercing nipples nude open_mouth orange_hair outside pecs penis penis_accessory penis_jewelry penis_piercing piercing ravios smile smirk standing tattoo teeth tuft white_body white_fur xdarkspace

3:4 3_toes anthro balls big_feet big_penis black_bottomwear black_clothing black_pants black_shirt black_tank_top black_topwear bodily_fluids boots bottomwear claws clothed clothing curling_toes digital_media_(artwork) doc_martens feet foot_fetish foot_focus footwear fur fur_markings genitals hair hi_res holding_boots holding_clothing holding_footwear holding_object kangaroo laces long_feet long_hair looking_down low-angle_view macropod male mammal markings marsupial orange_hair pants paws penis plantigrade ravios shirt shoes smile soles solo stirrup_legwear sweat tail tank_top toes topwear torn_bottomwear torn_clothing torn_pants wet worm's-eye_view wrinkled_feet wrinkles xdarkspace

3_toes 3d_(artwork) 4_toes alizea_(blackie94) anthozoan anthro aquatic artspam_(modeler) barefoot beach big_butt big_feet black_body bodily_fluids butt butt_grab claws cnidarian coral countershade_feet countershading cum cum_in_vagina cum_inside digital_media_(artwork) dinosaur fangs feet female foot_fetish foot_focus fur genital_fluids genitals gold_(metal) golden_fangs group hair hand_on_butt hi_res humanoid_genitalia kangaroo leaking leaking_cum long_hair looking_at_viewer looking_down lying macropod male male/female mammal marsupial muscular nipples nude on_front open_mouth outside penis piercing plantigrade prehistoric_species ravios reptile sand saurischian scalie sea seaside sitting smile soles summer sunset surfboard tail tattoo teeth theropod toe_claws toes trio tyrannosaurid tyrannosauroid tyrannosaurus tyrianna underwater water wrinkled_feet wrinkles xdarkspace

abs anthro athletic athletic_male bat belt belt_buckle bottomwear buckle chain clothed clothing collar duo ear_piercing electronics fangs fur gold_(metal) gold_jewelry hair hand_holding hi_res holding_microphone holding_object jewelry kangaroo leaning legwear long_hair looking_at_viewer macropod male male/male mammal marsupial microphone mouth_closed muscular muscular_anthro muscular_male neck_tuft open_mouth orange_hair pants pantyhose piercing ravios shirt simple_background slim smile standing stoven_(xdarkspace) tail tank_top teeth topwear torn_bottomwear torn_clothing torn_pants tuft underwear white_hair xdarkspace yellow_eyes

absurd_res accessory anthro boots bottomwear cigar cigarette cigarette_in_mouth cigarette_smoke clock clothed clothing collar digital_media_(artwork) ear_piercing english_text eyewear footwear fur glasses gold_(metal) hair hi_res highlights_(coloring) laces long_hair looking_at_viewer male mammal marsupial mountain object_in_mouth on_ground orange_hair outside pants piercing plant puffer_jacket ravios ring shirt shoes sitting smoke smoking solo sunglasses tail tank_top text topwear tree watch winter_boots winter_coat xdarkspace yellow_eyes

3_toes 5_fingers 5_toes abs absurd_res aloha_shirt anthro ball bat beach beach_ball black_body black_hair blonde_hair brown_body canid canid_demon canine canis cigarette claws clothed clothing demon digital_media_(artwork) ear_piercing eyewear facial_piercing fangs feet fingers foot_focus footwear golden_fangs group hair hat headgear headwear hellhound hi_res highlights_(coloring) humanoid_feet hybrid inflatable kangaroo long_hair looking_at_viewer macropod male mammal marsupial muscular muscular_anthro muscular_male mythological_canine mythological_creature mythology nipples nose_piercing nose_ring open_mouth orange_hair outside pattern_clothing pattern_shirt pattern_topwear pawpads pecs piercing plantigrade ravios raxan_(xdarkspace) red_eyes red_hair ring_piercing sand sandals sea shirt shirtless_male shoes size_difference slim small_waist sombrero stoven_(xdarkspace) sunglasses swimsuit_only swimwear tank_top teeth toes topwear water white_body wolf xdarkspace yellow_eyes

alternative_fashion anthro bat belt black_body black_hair blonde_hair boots bottomwear brown_body canid canid_demon canine ceiling claws clothed clothing crop_top demon denim denim_bottomwear denim_clothing detailed_background digital_media_(artwork) drop_ceiling emerson_lake_&_palmer fangs floor footwear fur group hair hat headgear headwear hellhound hi_res holding_object inside jacket jeans kangaroo label ladder larger_male long_hair looking_down macropod male mammal marsupial mythological_canine mythological_creature mythology open_mouth orange_hair pants piercing punk ravios raxan_(xdarkspace) record_store shirt shoes shopping sign size_difference slim smile sombrero store stoven_(xdarkspace) tank_top teeth text the_alan_parsons_project topwear vinyl_record wall_(structure) white_body wood wood_floor xdarkspace

3_toes 4_toes anthro balls big_balls big_feet big_penis bodily_fluids car claws countershading deep_throat demon digital_media_(artwork) duo ear_piercing ejaculation fangs feet fellatio foreskin genital_fluids genitals gold_(metal) hair hellaverse helluva_boss hi_res holding_both_legs horn humanoid_genitalia humanoid_penis imp kangaroo leg_grab long_hair macropod male male/male mammal marsupial moxxie_(helluva_boss) night nipples nude open_mouth oral oral_penetration orange_hair outside penetration penile penis piercing precum precum_string ravios saliva saliva_string sex size_difference smile standing tail teeth toes vehicle vein veiny_penis xdarkspace

3_toes anthro bat big_penis bodily_fluids body_worship brown_body claws clone digital_media_(artwork) ear_piercing ear_ring ejaculation fangs feet foot_fetish foreskin genital_worship genitals glistening glistening_hair green_sclera group hair hi_res humanoid_genitalia humanoid_penis kangaroo licking long_hair looking_up macropod male male/male mammal marsupial neck_tuft nude open_mouth open_smile oral penile penis penis_grab penis_lick penis_worship piercing ravios ring_piercing ringed_eyes saliva saliva_on_penis saliva_on_tongue sex simple_background smile stoven_(xdarkspace) teal_tongue teeth toes tongue tongue_out tuft white_hair xdarkspace yellow_sclera

4_toes 5_fingers 5_toes amplifier anthro armpit_hair athletic athletic_male backflip bat black_body black_clothing black_fur black_shirt black_tank_top black_topwear body_hair bottomwear brown_body canid canine claws clock clothed clothing converse_shoes digital_media_(artwork) ear_piercing electric_guitar fangs_bared feet fingers fishnet_clothing fishnet_legwear foreshortening fur group guitar hair hi_res hoodie humanoid_feet kangaroo legwear long_hair looking_at_viewer looking_up macropod male mammal marsupial muscular muscular_male musical_instrument open_mouth orange_hair pants piercing plantigrade plucked_string_instrument ravios raxan_(xdarkspace) reaching_out reaching_towards_viewer ring rockstar shirt shorts smile spikes stoven_(xdarkspace) string_instrument tail tank_top toes tongue tongue_out topwear torn_bottomwear torn_clothing torn_pants watch white_body white_fur wristband xdarkspace

3_toes abs anthro anus ass_up balls big_feet claws clenched_teeth digital_media_(artwork) ear_piercing fangs feet foot_focus foreskin fur genitals gesture hair hand_gesture humanoid_genitalia humanoid_penis inside kangaroo long_feet long_hair looking_at_viewer lying macropod male mammal marsupial middle_finger muscular muscular_anthro muscular_male nipples nude on_back orange_hair penis piercing puffy_anus ravios smile solo tail teeth teeth_showing toes xdarkspace

3_toes anthro big_feet claws digital_media_(artwork) duo fangs feet foot_fetish foot_focus foot_play hair hi_res long_feet looking_up male male/male mammal open_mouth paws plantigrade ravios sequence simple_background size_difference stoven_(xdarkspace) teeth toes tongue xdarkspace

alternative_fashion anthro arms_tied ash_(g-h-) balls bat bdsm big_penis bodily_fluids bondage bound bracelet chain clothed clothing collar cum cumshot cymbals digital_media_(artwork) ejaculation electric_guitar erection excessive_cum excessive_genital_fluids fangs forced forced_orgasm fur garage garage_door gecko genital_fluids genitals green_body green_scales group guitar hair hi_res humanoid humanoid_genitalia humanoid_penis jacket jewelry kangaroo keyboard leather leather_clothing leather_jacket leather_topwear legwear lizard long_hair looking_at_another looking_at_partner macropod male male/male mammal marsupial mohawk musical_instrument neck_tuft open_mouth orange_hair orgasm penis penis_size_difference percussion_instrument playing_music plucked_string_instrument punk ravios red_hair reptile rope rug scales scalie sex_toy sitting spiked_bracelet spiked_collar spikes standing stockings stoven_(xdarkspace) string_instrument teeth toolbox topwear trio tuft vein veiny_penis vibrator xdarkspace

3_toes 4_toes anthro athletic bat big_feet canid canid_demon canine canis claws demon digital_media_(artwork) eyewear fangs feet foot_fetish foot_focus fur group hair hellhound hi_res humanoid_feet kangaroo long_hair looking_at_another lying macropod male mammal marsupial muscular muscular_anthro muscular_male mythological_canine mythological_creature mythology nipples on_back on_front open_mouth paws plantigrade ravios raxan_(xdarkspace) red_hair sitting slim smile stoven_(xdarkspace) sunglasses tail teeth toes wolf xdarkspace

3_toes abs alternative_fashion anthro belt big_feet black_highlights bodily_fluids boots bottomwear bulge claws clothed clothing cropped_jacket crossed_legs ear_piercing fangs feet feet_up first_person_view foot_fetish foot_focus footwear foreshortening fur gesture gold_(metal) gold_tooth goth goth_boots green_hair hair hand_gesture hi_res highlights_(coloring) inside jacket kangaroo leash leashed_viewer leather leather_clothing leather_jacket leather_topwear long_hair looking_at_viewer macropod male mammal marsupial muscular muscular_anthro muscular_male musky_feet navel open_mouth open_smile pattern_clothing paws pecs piercing plaid plaid_clothing plantigrade pointing pointing_at_viewer punk raised_arm ravios sharp_teeth shoes shorts sitting smelly smelly_feet smile soles solo sweat sweaty_feet tail teeth toe_claws toes topwear wrinkled_feet wrinkles xdarkspace yellow_eyes zipper

3_toes abs absurd_res anthro balls biceps big_feet big_tail broken_instrument brown_body claws digital_media_(artwork) electric_guitar english_text feet foreskin fur fur_markings genitals guitar hair hi_res kangaroo long_feet long_hair macropod male mammal markings marsupial multicolored_body multicolored_fur multiple_piercings muscular muscular_anthro muscular_male musical_instrument navel nipples nude orange_hair paws pecs penis piercing plantigrade plucked_string_instrument ravios scratching_head solo standing string_instrument tail text toes two_tone_body two_tone_feet two_tone_fur vein veiny_penis xdarkspace

3_toes abs anthro barefoot biceps big_feet big_penis big_tail claws ear_piercing fangs feet foot_fetish foot_focus foreskin fur genitals gold_(metal) golden_fangs hair hi_res humanoid_genitalia kangaroo long_hair macropod male mammal marsupial muscular muscular_anthro muscular_male nipples nude on_ground open_mouth orange_hair paws pecs penis piercing raised_leg ravios rodent simple_background sitting smile solo tail teeth thick_thighs toes tuft vein veiny_penis xdarkspace

3_toes absurd_res anthro bat biceps big_feet big_penis big_tail bowl brown_body chopsticks claws container duo ear_piercing eating electronics feet food food_on_penis foot_fetish foot_focus foot_on_penis foot_play foreskin freckled_face freckles genitals hair hi_res holding_bowl holding_container holding_object humanoid_genitalia humanoid_penis inside kangaroo long_hair long_tail looking_at_viewer looking_up macropod male male/male mammal marsupial mouth_closed muscular muscular_anthro muscular_male nipples noodles nude orange_hair paws penis phone piercing raised_leg ramen ravios rodent sitting stoven_(xdarkspace) sushi tail toes train vehicle vein veiny_penis xdarkspace

3_toes anthro big_butt big_feet big_penis bottomless bottomless_anthro bottomless_male brown_body brown_fur bubble_butt butt casual_erection casual_nudity claws clothed clothing dreiker ear_piercing erection eyes_closed feet foot_focus foreskin fur furniture genitals hi_res humanoid_genitalia humanoid_penis industrial_piercing jacket jacket_only kangaroo leather leather_clothing leather_jacket leather_topwear lying macropod male mammal marsupial on_front on_sofa penis penis_against_surface piercing ravios sleeping sofa soles solo tail toe_claws toes topwear topwear_only

abs anthro bedroom_eyes belt big_muscles bird's-eye_view bottle bottomwear brown_body cigarette clothed clothing collar container crotch_tuft digital_media_(artwork) ear_piercing electronics fangs fur fur_markings gold_(metal) gold_jewelry golden_fangs green_hair hair hi_res high-angle_view huge_muscles jewelry kangaroo latex latex_bottomwear latex_clothing latex_pants long_hair looking_at_viewer looking_up macropod male male_anthro mammal markings marsupial microphone muscular muscular_anthro muscular_male narrowed_eyes necklace open_mouth open_smile pants partially_clothed piercing ravios seductive simple_background smile solo spiked_collar spikes tail teeth topless topless_anthro topless_male tuft water_bottle xdarkspace yellow_eyes

3_toes abs absurd_res anthro balls big_feet brown_body claws digital_media_(artwork) ear_piercing faceless_character faceless_male feet first_person_view foot_fetish foot_focus foot_play foreskin fur genitals hair hi_res imminent_stomp jumping kangaroo long_hair looking_at_viewer looking_down macropod male male_pov mammal markings marsupial muscular muscular_anthro muscular_male nipples nude orange_hair paws pecs penis piercing raised_arm ravios simple_background smile soles solo tail teeth toes xdarkspace

3_toes 5_toes abs anal anal_penetration anthro balls bat big_feet big_penis bodily_fluids box brown_body butt caught caught_in_the_act claws container cum cum_inside digital_media_(artwork) ejaculation entwined_tails fangs feet felid feline food foreskin fur furniture genital_fluids genitals glistening glistening_body gold_(metal) group group_sex hair hi_res humanoid_genitalia humanoid_penis inside kangaroo larger_sub legs_up looking_at_viewer lying macropod male male/male male_penetrated male_penetrating male_penetrating_male mammal marsupial muscular muscular_anthro muscular_male neck_tuft nude on_side open_mouth orange_hair pantherine penetration penile penis precum prehensile_feet purple_body ravios sandwich_(food) sandwich_position sex size_difference sofa sofa_sex stoven_(xdarkspace) submissive sweat tail tail_coil teeth thick_thighs threesome toes tongue trio tuft vip white_hair xdarkspace yellow_penis

3_toes 4_toes abs absurd_res alternative_fashion anthro balls big_balls big_feet big_penis black_penis bodily_fluids bracelet claws collar colored_nails crotch_tuft cuff_(restraint) digital_media_(artwork) duo_focus ear_piercing electronics erection fangs feet foot_focus foreskin fur genital_piercing genitals goat_(movie) gold_(metal) group hair hi_res high-angle_view humanoid_feet humanoid_genitalia humanoid_penis iguana iguanid jewelry jumping kangaroo komodo_dragon lizard long_hair long_tongue looking_at_viewer looking_down looking_down_at_viewer low-angle_view macropod male male/male mammal marsupial microphone modo_olachenko monitor_lizard muscular muscular_anthro muscular_male nails nipple_piercing nipples nude open_mouth orange_hair paws pecs penis penis_piercing piercing plantigrade punk ravios reptile restraints ring saliva saliva_on_tongue saliva_string scales scalie smile smirk soles sony_corporation sony_pictures sony_pictures_animation spiked_bracelet spiked_collar spikes stage sweat teeth toes tongue tongue_out tongue_piercing tuft wrist_cuffs xdarkspace

anthro bass_guitar bat bird's-eye_view black_clothing claws clothed clothing dialogue drumstick_(musical) duo ear_piercing english_text fangs fishnet_clothing fishnet_topwear footwear grass guitar hair hi_res high-angle_view kangaroo long_hair looking_at_viewer looking_up macropod male male/male mammal markings marsupial musical_instrument neck_tuft nipples open_mouth orange_hair piercing plant plucked_string_instrument ravios rockstar shirt shoes simple_background smile speech_bubble standing stoven_(xdarkspace) string_instrument tail teeth text tongue tongue_out topwear tuft white_hair xdarkspace

3_toes absurd_res alcohol alcohol_bottle alternative_fashion amplifier anthro audience bass_guitar belt_buckle beverage beverage_bottle boots bottle bottomwear buckle bystander claws clothed clothing concert container crouching dialogue digital_media_(artwork) ear_piercing electronics fangs feet footwear fur green_hair group guitar hair hi_res holding_microphone holding_object inside kangaroo leaning long_hair lying macropod male mammal marsupial microphone musical_instrument musical_note musical_symbol nipples open_mouth pants piercing playing_music plucked_string_instrument psychedelic punk raised_leg ravios rockstar shirt shoes sleeping solo speaker standing stovenfang string_instrument symbol tail tank_top teeth toes tongue topwear

absurd_res accessory animal_genitalia animal_penis anthro antlers audience avian balls bass_guitar big_balls big_penis bird bird's-eye_view bottomwear bracelet brown_body brown_fur canid canine cervine claws clothing cock_ring crowd cuff_(restraint) deer dragon duo ear_piercing ejaculation equine_genitalia equine_penis erection eyes_closed fangs fishnet_clothing fishnet_topwear footwear foreshortening fur fur_markings genital_piercing genitals green_hair group guitar hair harness hi_res high-angle_view horn huge_balls huge_penis inside jewelry kangaroo lagomorph latex latex_bottomwear latex_clothing latex_legwear latex_pants legwear leporid long_hair long_tongue macropod male male/male mammal markings marsupial muscular muscular_male musical_instrument mythological_creature mythological_scalie mythology neck_tuft nightclub nipple_piercing nipples open_mouth pants penis penis_accessory penis_jewelry penis_piercing piercing plucked_string_instrument prince_albert_piercing rabbit ravios restraints ring scalie shoes smile spiked_bracelet spikes stage stage_lights standing stovenfang string_instrument teeth tongue tongue_piercing topwear tuft wrist_cuffs

anthro athletic athletic_anthro athletic_male big_tongue bottomwear brown_body brown_fur claws clenched_teeth clothed clothing digital_media_(artwork) fangs fur fur_markings golden_fangs hair hi_res kangaroo leaning leaning_forward long_hair looking_at_viewer macropod male male_anthro mammal markings marsupial muscular muscular_anthro muscular_male orange_hair pants piercing purple_tongue ravios smile solo stovenfang tail teeth tongue tongue_out topless topless_anthro topless_male yellow_eyes

absurd_res amplifier anthro bass_guitar bat belt boots bottomwear canid canid_demon canine canis clothed clothing collar concert concert_stage crop_top demon drum ear_piercing electric_guitar electronics eyewear fangs footwear fur gold_(metal) gold_jewelry golden_fangs group guitar hair hair_over_eye harness hat headgear headwear hellhound hi_res inside jewelry kangaroo latex latex_clothing leaning leaning_backward leaning_forward legwear lights long_hair looking_at_viewer macropod male mammal marsupial microphone musical_instrument mythological_canine mythological_creature mythology necklace open_mouth orange_hair percussion_instrument piercing plucked_string_instrument ravios raxan_(xdarkspace) ring sharp_teeth shirt shoes singing smile sombrero spiked_collar spikes stage stoven_(xdarkspace) stovenfang string_instrument sunglasses tail teeth tight_clothing topwear wolf

3_toes abs alcohol anthro athletic athletic_anthro athletic_male backwards_hat beer beverage big_feet big_penis black_penis bottle brown_body claws clothing container curling_toes digital_media_(artwork) erection fangs feet foot_fetish foot_focus fur fur_markings genitals hair hat headgear headwear hi_res holding_beer holding_object humanoid_genitalia humanoid_penis long_feet long_hair looking_down low-angle_view male mammal markings muscular muscular_anthro muscular_male nipples nude open_mouth orange_hair paws pecs penis piercing plantigrade ravios sharp_teeth sitting solo stovenfang tail teeth toes tongue tongue_out worm's-eye_view wrinkled_feet wrinkles

3_toes absurd_res anthro anus ass_up bat big_feet big_penis black_penis bodily_fluids bottle bottomwear brown_body chair claws close-up clothing container digital_media_(artwork) doggystyle dripping duo ear_piercing eyewear fangs feet from_behind_position fur furniture genital_fluids genitals glasses glistening hair hi_res humanoid_genitalia humanoid_penis inside kangaroo living_room long_hair long_tongue looking_back looking_down macropod male male/male mammal marsupial muscular muscular_anthro muscular_male neck_tuft nintendo nintendo_switch nipples nude open_mouth orange_hair pants paws pecs penis penis_size_difference piercing precum precum_drip puffy_anus ravios rug sequence sex sharp_teeth shocked size_difference slim standing stoven_(xdarkspace) stovenfang sweat tail teeth toes tongue tongue_out tuft vein veiny_penis white_hair yellow_penis

3_toes abs absurd_res anthro athletic athletic_anthro athletic_male balls barefoot big_feet big_penis bodily_fluids cellphone claws curtains digital_media_(artwork) ear_piercing electronics fangs feet foot_fetish foot_focus foreskin fur genitals golden_fangs hair half-erect hi_res holding_object holding_phone humanoid_genitalia humanoid_penis inside kangaroo long_hair looking_down macropod male mammal marsupial muscular muscular_male musk nipples nude open_mouth orange_hair pecs penis phone piercing ravios sharp_teeth smartphone smile solo stovenfang sweat tail teeth toes

absurd_res anthro bat boots bottomwear canid canid_demon canine canis cigarette cigarette_in_mouth claws clock clothed clothing collar demon ear_piercing eyewear facial_piercing fishnet_clothing fishnet_topwear footwear forest fur glasses group hair hat headgear headwear hellhound hi_res jacket kangaroo leather leather_clothing leather_jacket leather_topwear long_hair looking_at_viewer lying macropod male mammal marsupial mythological_canine mythological_creature mythology neck_tuft nose_piercing nose_ring object_in_mouth on_back open_mouth pants piercing pinned plant ravios raxan_(xdarkspace) ring ring_piercing shirt shoes sitting smile smoking sombrero stoven_(xdarkspace) stovenfang sweater tail tank_top teeth tongue tongue_out topwear tree tuft turtleneck watch wolf