FURVERT!

2015 4_toes balls behemoth_(final_fantasy) bodily_fluids broken_horn brown_body brown_fur claws cloud conditional_dnp day dradmon english_text erection feet feral final_fantasy frill_(anatomy) fur genital_fluids genitals grass horn knot looking_at_viewer male membrane_(anatomy) membranous_frill monster naughty_face one_eye_closed open_mouth outside patreon patreon_logo patreon_username penis plant precum purple_body purple_skin rock savanna scar side_view solo spiked_tail spikes spikes_(anatomy) square_enix tail teeth text toes tongue tongue_out tree website_logo white_body white_skin yaroul yellow_eyes

2014 anthro big_breasts biped blue_background breast_fondling breast_play breasts female fondling garroh genitals green_body green_scales half-closed_eyes hand_on_breast hand_on_hip hi_res multicolored_body multicolored_scales narrowed_eyes navel non-mammal_breasts nude orange_body orange_eyes orange_scales orange_stripes red_body red_scales reptile scales scalie simple_background smile smirk snake solo standing stripes vulva white_body white_scales

anthro anus big_butt biped bodily_fluids breasts butt butt_focus felid female fur genital_fluids genitals hair hguy44 hi_res looking_at_viewer looking_back lying mammal nipples obese obese_anthro obese_female open_mouth orange_body orange_fur overweight overweight_anthro overweight_female pantherine presenting presenting_hindquarters raised_tail red_hair solo spread_butt spreading tail teeth text tiger tongue tongue_out vaginal_fluids vulva wide_hips yellow_eyes

2001 angel anthro anthrofied armband balls biped black_nose bracelet canid canine canis claws english_text feathered_wings feathers flaccid fur genitals grey_body grey_fur hair halo hi_res jewelry kneeling long_hair looking_at_viewer male mammal navel necklace night nude open_mouth penis pubes rock solo star teeth text toe_claws water wet wings wolf wooky

2014 equid equine feathered_wings feathers female feral friendship_is_magic grass hair hasbro hi_res locksto mammal my_little_pony mythological_creature mythological_equine mythology orange_body orange_feathers outside pegasus plant purple_eyes purple_hair scootaloo_(mlp) solo tongue tongue_out wings young young_feral

abdominal_bulge anthro anthro_penetrated balls bat belly big_belly biped blush bodily_fluids breasts cum cum_in_vagina cum_inflation cum_inside dialogue dominant duo dust:_an_elysian_tail ejaculation english_text erection extreme_size_difference faceless_character faceless_human faceless_male female female_on_human female_penetrated fidget_(elysian_tail) fur genital_fluids genitals hi_res huge_penetration human human_on_anthro human_penetrating human_penetrating_anthro inflation interspecies larger_dom larger_human larger_male living_condom lol_comments male male/female male_on_anthro male_penetrating male_penetrating_female mammal membrane_(anatomy) membranous_wings navel nimbat nipples nude open_mouth orange_body orange_fur penetration penile penile_penetration penis penis_in_vagina penis_shaped_bulge pink_nipples ridiculous_fit sex size_difference smaller_female smaller_penetrated sparrow_(artist) tail tail_pull text unwanted_cum_inside unwanted_ejaculation vaginal vaginal_penetration vein veiny_penis vulva wings

16:9 2015 3d_(artwork) 3d_animation 5_toes animal_genitalia animated anthro anthrofied areola bad_metadata black_eyes blue_body blue_scales bouncing_breasts breasts digital_media_(artwork) duo eeveelution erection evilbanana eyes_closed feet female female_penetrated first_person_view flareon fur generation_1_pokemon genitals gynomorph gynomorph/female gynomorph_penetrating gynomorph_penetrating_female gynomorph_pov high_framerate inside intersex intersex/female intersex_penetrating intersex_penetrating_female intersex_pov interspecies looking_down multicolored_body multicolored_fur navel nintendo nipples no_sound nude open_mouth orange_body orange_fur penetrating_pov penetration penile penile_penetration penis penis_in_vagina pokemon pokemon_(species) pokemorph scales sex short_playtime source_filmmaker_(artwork) teeth toes two_tone_body two_tone_fur vaginal vaginal_penetration vaporeon video wide_hips widescreen yellow_body yellow_fur

2015 2d_animation aeris_(vg_cats) animated animated_gif anthro big_breasts big_penis blush breast_play breasts countershading domestic_cat duo erection felid feline felis fellatio female female_penetrated first_person_view genitals husband_and_wife joelasko leo_(vg_cats) male male/female male_penetrating male_penetrating_female mammal married_couple motion_tweening nipple_dip nipples oral oral_penetration penetrating_pov penetration penile penis sex short_playtime subtle_animation titfuck vein vg_cats

all_three_filled anal anal_penetration anthro anthro_penetrated balls big_penis biped brachiosaurid brachiosaurus curvy_figure dark_body dark_skin dinosaur double_penetration erection fellatio female female_penetrated foursome gangbang genitals group group_sex human human_on_anthro human_penetrating human_penetrating_anthro interspecies long_neck macronarian male male/female male_penetrating mammal oral oral_penetration penetration penile penile_penetration penis penis_in_ass penis_in_mouth penis_in_vagina prehistoric_species rear_view reptile saurischian sauropod sauropodomorph scalie sex solo_focus spitroast tail triple_penetration vaginal vaginal_penetration voluptuous vulva zabraxas

2015 anthro balls big_balls biped boots canid canine clothed clothing flaccid footwear foreskin fox fox_mccloud fur genitals gloves gun handwear jacket looking_at_viewer male mammal muscular muscular_anthro muscular_male navel nintendo partially_clothed pecs penis ranged_weapon reagan700 shoes smile solo standing star_fox teeth topwear weapon white_balls

anal anal_orgasm anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro balls blue_balls blue_body blue_fur bodily_fluids canid canine canine_genitalia canine_penis conditional_dnp cum cum_in_ass cum_inside cum_on_ground cum_while_penetrated dominant dragonite duo ejaculation erection eyes_closed fur generation_1_pokemon generation_4_pokemon genital_fluids genitals hands-free hi_res klaide knot larger_dom looking_pleasured lucario lying male male/male male_penetrated male_penetrating male_penetrating_male mammal membrane_(anatomy) membranous_wings nintendo nude on_side open_mouth orange_body orange_skin orgasm penetration penile penile_penetration penis penis_in_ass pokemon pokemon_(species) sex simultaneous_orgasms size_difference spread_legs spreading tail white_balls wings

2015 absurd_res anthro arm_grab arun_(tokaido) biped black_and_white blizzard_entertainment canid cellphone clenched_teeth clothed clothing comic dialogue dragon duo electronics english_text evil_grin eye_contact fan_character female fur grin hair hand_holding hi_res horn humor looking_at_another mammal monochrome mythological_creature mythological_scalie mythology paralee_(character) phone question_mark scalie simple_background size_difference smile solo standing tail teeth text tokaido walking warcraft werecanid werecreature worgen

2015 absurd_res anthro arun_(tokaido) biped black_and_white blizzard_entertainment canid cellphone claws clenched_teeth clothed clothing comic dialogue dragon duo electronics english_text evil_grin exclamation_point eye_contact fan_character female fur grin hair hi_res horn humor looking_at_another mammal monochrome mythological_creature mythological_scalie mythology paralee_(character) phone question_mark running scalie simple_background smile solo standing stealing tail teeth text toe_claws tokaido warcraft werecanid werecreature worgen

anthro beard biceps braided_beard callitrichid clothed clothing crossed_arms delicatessen digital_media_(artwork) facial_hair frown fur garland_kemy golden_lion_tamarin green_eyes half-length_portrait haplorhine hi_res lion_tamarin looking_at_viewer male mammal monkey musclegut muscular navel new_world_monkey portrait primate solo topless tuft yellow_body yellow_fur

2015 absurd_res anthro archie_comics bedroom_eyes black_nose blazeymix blue_eyes boots bottomless bottomless_female breasts brown_body brown_fur cheek_tuft chipmunk clothed clothing distracting_watermark eyelashes facial_tuft female footwear fur grass ground_squirrel hi_res inner_ear_fluff log looking_at_viewer mammal narrowed_eyes navel nipple_outline open_clothing open_shirt open_topwear open_vest outside plant rodent sally_acorn sallyhot sciurid scut_tail seductive sega shirt shoes short_tail smile solo sonic_the_hedgehog_(archie) sonic_the_hedgehog_(comics) sonic_the_hedgehog_(series) tail teamacorn text topwear tuft url vest watermark wood

ambiguous_gender aquatic bestiality bodily_fluids breasts brown_hair cephalopod coleoid consentacles cum cum_in_vagina cum_inside female female/ambiguous female_on_feral feral genital_fluids genitals hair hi_res human human_focus human_on_feral interspecies karin_son mammal mantle_(mollusk) mollusk nipples not_furry_focus nude octopodiform one_eye_closed penetration sex simple_background slightly_chubby solo teeth tentacle_sex tentacles vaginal vaginal_penetration vaiderman voltage_fighter_gowcaizer vulva

2015 anthro archie_comics areola barefoot bedroom_eyes biped black_nose blazeymix blue_eyes boots breasts brown_body brown_fur cheek_tuft chipmunk clothing detailed_background discarded_boots discarded_clothing eyelashes facial_tuft feet female footwear fur grass ground_squirrel hair inner_ear_fluff log looking_at_viewer mammal narrowed_eyes navel nipples nude nude_female outside pink_areola pink_nipples plant red_hair rodent sally_acorn sallyhot sciurid scut_tail seductive sega shirt shoes short_tail sitting smile solo sonic_the_hedgehog_(archie) sonic_the_hedgehog_(comics) sonic_the_hedgehog_(series) tail teamacorn text topwear tuft url wood

2015 3d_(artwork) 3d_animation 5_fingers 5_toes animated anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro argonian bad_metadata balls bethesda_game_studios big_breasts blue_eyes bodily_fluids bouncing_breasts breasts canid canine cavafly01 chest_tuft crossgender crossover cum cum_in_vagina cum_inside dialogue digital_media_(artwork) dirty_talk duo erection feet female female_penetrated fingers flash_conversion fox genital_fluids genitals humanoid_feet interspecies kissing long_playtime looking_pleasured male male/female male_penetrating male_penetrating_female mammal microsoft miles_prower moan mtf_crossgender nipples nude orgasm penetration penile penile_penetration penis penis_in_vagina plantigrade profanity scalie sega sex simple_background skyrim soles sonic_the_hedgehog_(series) sound stand_and_carry_position standing standing_sex tail the_elder_scrolls toes tuft vaginal vaginal_penetration video vulva

bodily_fluids clothing cutie_mark equid equine erection fellatio female feral fleur_de_lis_(mlp) friendship_is_magic genital_fluids genitals group group_sex hasbro hi_res horn hot_dogging legwear licking lying male mammal my_little_pony mythological_creature mythological_equine mythology oral penile penis penis_lick pillow poisindoodles precum purple_eyes raised_tail sex spitroast stockings tail tongue tongue_out unicorn

2015 absurd_res ambiguous_gender anthro aoino blue_eyes canid canine character_request featureless_crotch fire fur hi_res lamp lantern mammal open_mouth scarf simple_background solo star walking white_body white_fur

2015 animal_genitalia anthro anthrofied anus backsack balls beard blue_eyes bulge butt canid canine canis clothed clothing comic dialogue digital_media_(artwork) dog_tags domestic_dog dream duo english_text eyes_closed eyewear facial_hair felid feral fur genitals glasses hair harley_(kabscorner) hi_res infidelity kabscorner lying male male/male mammal multiple_scenes muscular nude on_back one_eye_closed open_mouth pecs penis penis_tip sheath sleeping smile spread_legs spreading sunglasses text tongue tongue_out topless tyler_(kabscorner) underwear wet_dream

animal_genitalia animal_penis animated animated_gif banned_from_equestria big_brian blonde_hair bodily_fluids brown_hair cheek_bulge cloud cum cum_in_mouth cum_inside cum_meter cum_on_tongue derpy_hooves_(mlp) digital_media_(artwork) drinking drinking_cum duo equid equine equine_genitalia equine_penis erection faceless_character faceless_male fan_character feathered_wings feathers fellatio female female_penetrated feral feral_on_feral feral_penetrated feral_penetrating feral_penetrating_feral feral_pov first_person_view friendship_is_magic fur genital_fluids genitals green_eyes grey_body grey_fur hair half-closed_eyes hasbro horse low_res male male/female male_penetrating male_penetrating_female male_pov mammal my_little_pony narrowed_eyes no_pupils onihidden open_mouth oral oral_only oral_penetration orgasm outside outside_sex penetrating_pov penetration penile penile_penetration penis penis_in_mouth pixel_(artwork) pixel_animation pony red_body red_fur red_penis sex short_playtime simple_background smile swallowing teeth tongue wings

ailurid anthro forced graphite_(artwork) hi_res mammal monochrome red_panda sepia simple_background solo suckers tentacle_maw tentacles traditional_media_(artwork) unknown_artist

2015 anthro anthrofied areola balls big_breasts biped bound breasts chain clothed clothing dialogue dragon dream duo english_text equid equine erect_nipples erection eyes_closed female friendship_is_magic genitals hair hasbro horn humanoid_genitalia humanoid_penis imminent_sex long_hair lying male male/female mammal mostly_offscreen_character my_little_pony mythological_creature mythological_equine mythological_scalie mythology navel nipples open_mouth penis pillow purple_hair rarity_(mlp) restrained scalie sleeping solo spike_(mlp) text tron-zix unicorn vein vulva white_body white_skin

2015 2d_animation alien animated animated_gif anus big_butt boris_(theboris) borisalien butt duo faceless_character faceless_female female female_focus frame_by_frame genitals hand_on_butt low_res male male/female short_playtime solo_focus vulva

5_toes anklet aquamarine_(gem) areola armlet bald_crotch bead bell big_areola big_breasts big_nipples blue_eyes blush bodily_fluids body_jewelry bound bracelet breasts brown_hair choker clitoral_hood clitoris clothing coin colored_nails colored_toenails consentacles crotch_lines cum cum_in_vagina cum_inside cum_on_belly cum_on_body cum_on_breasts curvy_figure dark_body dark_skin dutch_angle ear_piercing ecoas elf erect_nipples feet female floor footwear footwear_only front_view full-length_portrait gem genital_fluids genitals girdle glistening glistening_areola glistening_bodily_fluids glistening_body glistening_breasts glistening_cum glistening_eyes glistening_gem glistening_genital_fluids glistening_hair glistening_jewelry glistening_nails glistening_nipples glistening_piercing glistening_skin glistening_tentacles glistening_toenails gold_(metal) gold_anklet gold_armlet gold_choker gold_coin gold_jewelry gold_legband gold_necklace gold_ring hair half-closed_eyes hi_res high_heeled_sandals high_heels humanoid humanoid_face humanoid_feet humanoid_genitalia humanoid_nose humanoid_pointy_ears humanoid_vulva jewelry jingle_bell legband leglet light lips money monotone_body monotone_breasts monotone_genitals monotone_hair monotone_skin monotone_toenails mostly_nude multicolored_clothing multicolored_footwear multicolored_sandals multicolored_tentacles nails narrowed_eyes necklace nipple_bell nipple_jewelry nipple_piercing nipple_ring nipples not_furry open_mouth pendant penetration piercing pink_areola pink_clitoral_hood pink_clitoris pink_lips pink_nails pink_nipples pink_tentacles pink_toenails pink_tongue pink_vulva plantigrade pointy_ears pole portrait pubic_mound pupils purple_tentacles restrained ribbed_tentacle ring ring_piercing sandals sandals_only sex sex_show shadow shoes signature small_waist solo spiked_tentacles spikes spikes_(anatomy) spots spotted_tentacles spread_legs spreading strip_club stripper stripper_pole tan_body tan_skin tapering_tentacles teeth tentacle_creature tentacle_sex tentacles tile tile_floor toenails toes tongue upside_down vaginal vaginal_penetration vein veiny_tentacles vulva wet wet_tentacles wide_hips

3_toes anal anal_masturbation anal_penetration anus ass_up backsack balls bear bearstack black_balls black_body black_fur black_penis blush brown_balls brown_bear brown_body brown_fur brown_penis cartoon_network dialogue dildo english_text erection exclamation_point feet foreskin fur genitals giant_panda grizzly_(we_bare_bears) grizzly_bear group group_sex humanoid_genitalia humanoid_penis ice_bear_(we_bare_bears) imminent_anal lying male male/male male_penetrated male_penetrating male_penetrating_male mammal masturbation monsterblender on_front panda_(we_bare_bears) pawpads paws penetration penis penis_backwards polar_bear pseudo_incest_(lore) rear_view retracted_foreskin sex sex_toy soles speech_bubble text threesome toes toying_self train_position trio ursine vein veiny_penis vibrator we_bare_bears white_balls white_body white_fur white_penis

anthro anus backsack balls big_breasts bodily_fluids breasts butt butt_markings canid canine capcom chun-li clothing cosplay cum dildo dildo_in_vagina dildo_insertion dildo_sitting erection footprint genital_fluids genitals herm intersex looking_back mammal markings masturbation monochrome nipples orgasm pawprint pawprint_(marking) penetration penis presenting purgy saliva sex_toy sex_toy_in_vagina sex_toy_insertion solo street_fighter through_clothing tongue tongue_out torn_clothing vaginal vaginal_fluids vaginal_masturbation vaginal_penetration vaiderman vulva

2015 5_fingers animal_genitalia anthro bahamut biped dragon erection european_mythology final_fantasy final_fantasy_viii fingers genital_slit genitals greyscale hi_res male monochrome mythological_creature mythological_scalie mythology nude pale_(artist) penis pinup pose reptile scalie simple_background solo square_enix tapering_penis western_dragon white_background wings

2015 anthro bottomwear breasts canid canine clothed clothing female fox fur graphite_(artwork) greyscale group hair juno_lilikoi kalahari loincloth mammal monochrome navel nipples sketch solo_focus topless traditional_media_(artwork) tribal

16:10 anthro big_breasts black_hair blue_body blue_eyes blue_fur breasts bust_portrait comedy_central english_text felid female fur futurama gloves_(marking) hair holding_money holding_object image_macro impact_(font) kero_tzuki leopard long_hair mammal markings meme money open_mouth pantherine portrait reaction_image sein_kraft shut_up_and_take_my_money simple_background solo spots spotted_body spotted_fur text white_body white_fur widescreen

alpha_channel animal_crossing anthro black_nose blush bottomless breasts canid canine canis casual_exposure clothed clothing domestic_dog female genitals hair isabelle_(animal_crossing) mammal nintendo nipples ookami-kun open_mouth shih_tzu shirt solo tongue topwear toy_dog undressing vulva

3_toes ambiguous_gender blush bodily_fluids charizard comic dragon duo feet female feral generation_1_pokemon human human_prey imminent_vore japanese_text licking mammal mythological_creature mythological_scalie mythology nintendo orange_body orange_skin plus-alpha pokemon pokemon_(species) saliva scalie text toes tongue tongue_out translated vore

ambiguous_gender blush bodily_fluids charizard comic crying dragon duo feet female feral generation_1_pokemon human human_prey japanese_text larger_pred mammal mythological_creature mythological_scalie mythology nintendo orange_body orange_skin plus-alpha pokemon pokemon_(species) saliva scalie size_difference tears text toes tongue tongue_out translated vore

ambiguous_gender blush bodily_fluids charizard comic crying dragon duo female feral generation_1_pokemon human human_prey imminent_vore japanese_text larger_pred licking mammal membrane_(anatomy) membranous_wings mythological_creature mythological_scalie mythology nintendo orange_body orange_skin plus-alpha pokemon pokemon_(species) saliva scalie size_difference tears text tongue tongue_out translation_request vore wings

ambiguous_gender bodily_fluids charizard comic dragon duo feet female feral generation_1_pokemon human human_prey inside_stomach internal japanese_text larger_pred mammal membrane_(anatomy) membranous_wings mythological_creature mythological_scalie mythology nintendo orange_body orange_skin organs plus-alpha pokemon pokemon_(species) saliva scalie size_difference stomach tears text toes tongue tongue_out translation_request vore wings

anthro bag biped digital_media_(artwork) female low-angle_view namtih nude scalie solo standing train train_station vehicle

accessory ambiguous_gender bow_ribbon bow_tie coiling comic eeveelution exclamation_point feral generation_3_pokemon generation_6_pokemon hair_accessory hair_bow hair_ribbon japanese_text milotic nintendo plus-alpha pokemon pokemon_(species) question_mark ribbons scalie serpentine sylveon text translated

ambiguous_gender coiling comic eeveelution feral generation_3_pokemon generation_6_pokemon green_background imminent_vore japanese_text milotic nintendo plus-alpha pokemon pokemon_(species) scalie simple_background sylveon text translated vore

ambiguous_gender bodily_fluids coiling comic detailed_background eeveelution feral generation_3_pokemon generation_6_pokemon japanese_text milotic nintendo oral_vore plus-alpha pokemon pokemon_(species) saliva scalie swallowing sylveon text tongue tongue_out translated vore

abdominal_bulge ambiguous_gender bodily_fluids coiling comic eeveelution feral generation_3_pokemon generation_6_pokemon japanese_text milotic neck_bulge nintendo oral_vore plus-alpha pokemon pokemon_(species) saliva scalie swallowing sylveon text translated vore

1:1 abs anal anthro avian biped bodily_fluids bound canid canine chastity_cage chastity_device claws collar cum cum_on_body cum_on_face digitigrade dominant dominant_male duo_focus english_text erection forced foreskin fox fox_mccloud gang_rape gangbang general_scales genital_fluids genitals group group_sex humanoid_genitalia humanoid_penis interspecies kneeling male male/male male_penetrated male_penetrating male_penetrating_male mammal muscular nintendo penetration penis rape reptile retracted_foreskin scalie sex sharpclaw_(star_fox) slave spelunker_sal star_fox story story_in_comments story_in_description submissive submissive_male text tongue url

anatomically_correct anatomically_correct_genitalia anatomically_correct_vulva animal_genitalia animal_vulva anthro breasts canid canine canine_genitalia canine_vulva canis coypowers detailed_background dildo eyes_closed female furniture genitals hi_res mammal masturbation moon nude open_mouth penetration sex_toy side_boob sofa solo toying_self traditional_media_(artwork) vaginal vaginal_masturbation vulva wolf

alcohol anthro beach bening beverage butt canid canine canis clothing comic crotch_grab dialogue digital_media_(artwork) dingo dog_tags dragon drunk duo english_text eyewear food grope hi_res higsby interspecies khris_dragon liquor male male/male mammal multiple_scenes mythological_creature mythological_scalie mythology onomatopoeia outside scalie seaside sound_effects substance_intoxication sunglasses tail text thong tuft underwear url

2015 abs anthro athletic bedroom biped bulge clothed clothing cocky demicoeur detailed_bulge digital_media_(artwork) electronics felid fur genital_outline genitals half-erect hi_res leopard looking_at_viewer male mammal muscular muscular_anthro novus pantherine partially_clothed penis penis_base penis_outline phone selfie shaded smile snow_leopard solo standing underwear

2014 amber_eyes anthro blue_eyes blush canid canine canis dream duo felid fermata_suzuka lion male male/male mammal morenatsu pantherine question_mark shun_kodori simple_background soutarou_touno twinkle wolf

2015 anal anal_masturbation anal_penetration anthro big_breasts blush breasts coffinpaws dildo equid equine fan_character female genitals hasbro hi_res horse iabelle leaning mammal masturbation my_little_pony nipples nude penetration pony sex_toy solo toying_self vulva

absurd_res anthro areola big_breasts breasts dhx2kartz erect_nipples female fur hair half-closed_eyes hand_on_breast hi_res huge_breasts hyper hyper_breasts lagomorph leporid looking_away mammal narrowed_eyes nipples nude presenting rabbit sega simple_background solo sonic_the_hedgehog_(series) vanilla_the_rabbit

animal_humanoid aquatic aquatic_humanoid beach big_breasts big_butt bikini breasts butt cephalopod cephalopod_humanoid cleavage clothed clothing curvy_figure day female glass glassfish green_hair hair humanoid inkling janine_squidly light mature_female mature_humanoid mollusk mollusk_humanoid mother_(lore) nintendo on_towel outside parent_(lore) pseudo_hair sand seaside shadow skimpy splatoon sunlight swimwear tentacle_hair tentacles towel two-piece_swimsuit voluptuous water

3d_(artwork) 3d_animation animated animated_gif anthro anthroanim balls big_balls big_penis biped digital_media_(artwork) erection gang_xi_siyu genitals hair huge_balls humanoid_genitalia humanoid_penis hyper hyper_balls hyper_genitalia male mammal masturbation mouse murid murine nude penile penile_masturbation penis pose presenting rodent short_playtime siyu solo spread_legs spreading wide_hips