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3_toes 5_fingers abs alternate_species anthro arody balls barefoot biceps big_muscles big_penis biped bird_dog black_claws black_nose blonde_hair bottomwear canid canine canis claws clothed clothing domestic_dog erection feet fingers flexing foreskin fur furrification genitals golden_retriever growth hair hand_behind_head humanoid_genitalia humanoid_penis hunting_dog johnny_test johnny_test_(series) male mammal merging muscle_growth muscular muscular_anthro muscular_male nipple_outline open_bottomwear open_clothing open_pants pants pecs penis penis_poking_out penis_through_fly pink_penis plantigrade retracted_foreskin retriever sharp_teeth shirt shorts signature simple_background solo standing teeth tight_clothing toe_claws toes topwear torn_clothing transformation unzipped vein veiny_penis yellow_balls yellow_body yellow_fur zipper

2008 abs anthro athletic beach biceps bird_dog bottomwear bracelet bulge canid canine canis clothed clothing cooner crossed_arms dipstick_tail domestic_dog dragon english_text equid equine fangs felid fox fur golden_retriever hair hands_behind_head horse hunting_dog jewelry lagomorph leporid male mammal markings muscular muscular_anthro mythological_creature mythological_scalie mythology necklace net nipples open_mouth outside pecs pose rabbit retriever sand scales scalie seaside shorts solo sport spots swimming_trunks swimwear tail tail_markings teeth text tongue topless url volleyball volleyball_net

anthro arcanine bdsm bird_dog bound canid canine canis cuff_(restraint) domestic_dog dominant dominant_male dungeon duo fire forced generation_1_pokemon golden_retriever hi_res hunter hunter_(road_rovers) hunting_dog jupiter_fox male male/male mammal nintendo pokemon pokemon_(species) rape restraints retriever road_rovers sex shackles stocks submissive submissive_male tail

abs anthro armor bird_dog blue_eyes boots bracers canid canine canis cape clothing domestic_dog footwear fur golden_retriever hammer hunting_dog looking_at_viewer male mammal marvel muscular muscular_anthro muscular_male retriever sharks_(artist) shoes simple_background solo source_request tail the_avengers thor_(marvel) thor_(series) tools white_background yellow_body yellow_fur

abdominal_bulge abs anal anal_penetration animal_genitalia anthro arm_grab balls biceps big_balls big_penis bird_dog blitz_(road_rovers) canid canine canis coiling_around_penis coiling_around_torso creepy dobermann domestic_dog double_penetration ear_penetration egg egg_bulge egg_from_ovipositor egg_in_ass egg_in_mouth egg_in_urethra egg_insertion erection exile_(road_rovers) feet floppy_ears forced foreskin foursome front_view fully_restrained genitals golden_retriever group group_sex hindpaw huge_balls huge_penis hunter_(road_rovers) hunting_dog husky hybrid_genitalia hybrid_penis hyper hyper_balls hyper_genitalia hyper_penis immobilization inflation injection inside_balls intestinal_bulge knot leg_grab lifted male male/male male_penetrated male_penetrating male_penetrating_male mammal mindfuck monochrome muscular nightmare_fuel nipple_fetish nipple_play nipples nordic_sled_dog nude oral oral_penetration oviposition ovipositor partially_retracted_foreskin paws pecs penetration penis pinscher pointy_ears prick_ears rape restrained restrained_by_tentacles retracted_foreskin retriever road_rovers sex sheath sketch snout spitz tentacle_creature tentacle_in_ass tentacle_in_mouth tentacle_in_penis tentacle_ovipositor tentacle_penetration tentacle_rape tentacle_sex tentacles testicular_pregnancy uncut_with_sheath unusual_pregnancy upside_down urethral urethral_penetration what wolfblade

2009 4_toes 5_fingers animal_genitalia animal_penis anthro bed bedroom bird_dog blotch blue_eyes bottomless bottomwear boxer_briefs bracelet brown_body brown_fur camera canid canine canine_genitalia canine_penis canis claws clothed clothing dalmatian denim denim_bottomwear denim_clothing digitigrade domestic_dog duo erection feet finger_claws fingers fur furniture genitals golden_retriever grey_body grey_fur hindpaw hunting_dog husky inside jeans jewelry knot licking licking_lips lying male male/male mammal masturbation nordic_sled_dog on_back on_bed pants pawpads paws penile penile_masturbation penis pillow poster_(object) raised_clothing raised_shirt raised_topwear retriever self_lick shirt spitz tail toe_claws toes tongue tongue_out topless topwear traditional_media_(artwork) underwear video_camera

4:5 abs alien anal anal_penetration anthro balls barefoot biceps big_muscles big_penis bird_dog brown_body brown_fur canid canine canis claws clothing collar domestic_dog drigon duo erection eye_contact feet from_front_position fur genitals gloves golden_retriever green_body green_eyes green_skin grin hair handwear hunter_(road_rovers) hunting_dog interspecies krush_araki looking_at_another lying male male/male male_penetrated male_penetrating male_penetrating_male mammal missionary_position muscular muscular_male nipples nude on_back pecs penetration penis reptile retriever road_rovers scales scalie sex smile spread_legs spreading

anthro balls bird_dog black_nose blue_eyes bodily_fluids breasts brown_body brown_eyes brown_fur canid canine canis car collar colleen_(road_rovers) collie cum cum_in_mouth cum_in_vagina cum_inside cum_string domestic_dog duo erection fellatio female fingering fingering_self fluffy fluffy_tail fur genital_fluids genitals golden_retriever herding_dog hunter_(road_rovers) hunting_dog male male/female mammal masturbation mostly_nude nipples nude open_mouth oral orgasm outside pastoral_dog penile penis pose retriever road_rovers rough_collie sex sheepdog tail tan_body tan_fur tongue unknown_artist vehicle vulva white_body white_fur

4_toes 5_fingers ambiguous_gender animal_humanoid anthro beanie black_hair blonde_hair blue_eyes bottomwear breasts brown_hair canid canine canis cat_humanoid chart clothing digital_media_(artwork) domestic_cat domestic_dog dress feet felid felid_humanoid feline feline_humanoid felis female feral fingers footwear full-length_portrait fur furry_scale green_eyes grey_body grey_fur grey_hair group hair hat headgear headwear hoodie human humanoid japanese_text kemono lagomorph leporid long_hair looking_at_viewer looking_away mammal mammal_humanoid mottled namu's_golden_retriever namu_(nurui_cha) nude open_mouth open_smile orange_eyes pants piebald portrait rabbit raccoon_dog red_clothing red_eyes red_hoodie red_topwear semi-anthro shoes shorts simple_background sitting smile snout standing tail tanuki text toes topwear translated white_background yellow_body yellow_fur

air_bud air_bud_entertainment anthro anthrofied backsack ball balls basketball basketball_(ball) bird_dog bottomless buddy_(air_bud) butt canid canine canis clothed clothing domestic_dog drop genitals golden_retriever greyscale hunting_dog jersey male mammal monochrome retriever shirt sixsydes sketch solo surprised tail teeth topwear

1:1 abs anal anal_penetration animal_genitalia animal_penis balls biceps big_balls big_penis bird_dog bodily_fluids canid canine canine_genitalia canine_penis canis cloud collar cum cum_inside cum_while_penetrated detailed_background dipstick_tail domestic_dog duo ejaculation erection exile_(road_rovers) forest genital_fluids genitals golden_retriever hands-free hi_res hunter_(road_rovers) hunting_dog husky jupiter_fox knot male male/male male_on_bottom male_on_top male_penetrated male_penetrating male_penetrating_male mammal markings muscular nordic_sled_dog nude on_bottom on_top orgasm outside penetration penis plant retriever reverse_cowgirl_position road_rovers sex sitting sky snow snowmobile spitz tail tail_markings tree winter

against_surface anal anal_penetration animal_genitalia animal_penis anthro balls bird_dog canid canine canine_genitalia canine_penis canis claws colby cougar digital_media_(artwork) domestic_dog duo erection eyes_closed felid feline from_behind_position genitals glass golden_retriever hunting_dog jailbird knot male male/male male_penetrated male_penetrating male_penetrating_male mammal nude on_glass penetration penis retriever sex shaded shower standing tail talent tongue tongue_out

anthro bird_dog canid canine canis clothed clothing collar digital_media_(artwork) domestic_dog duo floppy_ears golden_retriever hunting_dog jailbird male male/male mammal navel nude pdawg retriever shaded slightly_chubby speedo story story_in_description swimwear tail topless

ailurid all_fours anal anal_penetration anthro bird_dog cake canid canine canis collar daiquiri_(daiquiripanda) dessert digital_media_(artwork) doggystyle domestic_dog dominant dominant_male duo erection food force_feeding forced from_behind_position genitals golden_retriever hedonism hunting_dog jailbird leash male male/male male_penetrated male_penetrating male_penetrating_male mammal nude pdawg penetration penis raised_tail red_panda retriever sex shaded submissive submissive_male tail

2013 anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro arm_grab balls bdsm biped bird_dog black_penis bodily_fluids brother_(lore) brothers_(lore) brown_hair canid canine canine_genitalia canine_penis canis collar cum cum_while_penetrated cumshot domestic_dog dominant dominant_male duo ejaculation erection eyes_closed from_behind_position fur genital_fluids genitals golden_retriever grin hair hands-free hunting_dog incest_(lore) knot leash male male/male male_penetrated male_penetrating male_penetrating_male mammal multicolored_body multicolored_fur nude orgasm penetration penile penile_penetration penis petplay pink_penis public retriever roleplay sex sheath short_hair sibling_(lore) smile standing submissive submissive_male syynx tail tattoo two_tone_body two_tone_fur white_body white_fur yellow_body yellow_fur

5_fingers accessory anthro big_breasts big_tail biped bird_dog blonde_hair blue_clothing blue_eyes blue_overalls braided_hair breast_squish breasts brown_body brown_fur brown_tail canid canine canis chalo chest_tuft cleavage clothed clothing copyright_symbol domestic_dog eye_through_hair eyebrow_through_hair eyebrows female fingers fluffy fluffy_tail freckles fully_clothed fur furgonomics gloves_(marking) golden_retriever grey_background hair hair_accessory hair_tie hand_on_hip hand_on_leg hand_on_own_hip hand_on_own_leg hand_on_own_thigh hand_on_thigh hunting_dog las_lindas leaning leaning_forward looking_at_viewer mammal markings multicolored_body multicolored_fur overalls pigtails portrait retriever simple_background smile solo squish standing sunny_cooper symbol tail tail_clothing teeth three-quarter_portrait translucent translucent_hair tuft two_tone_body two_tone_fur wide_hips

2012 4:3 air_bud air_bud_entertainment all_fours anthro anthrofied ass_up backsack ball balls basketball_(ball) bird_dog bottomwear bottomwear_down buddy_(air_bud) butt canid canine canis clothed clothing domestic_dog dream_and_nightmare fur genitals golden_retriever hunting_dog jersey looking_at_viewer looking_back male mammal pants pants_down partially_clothed presenting retriever shirt solo tail topwear yellow_balls yellow_body yellow_fur

2013 anthro auto_penis_lick autofellatio balls bed biped bird_dog canid canine canis code_drop dildo domestic_dog erection erik_(tempo) food furniture genitals golden_retriever hunting_dog legs_up licking long_story looking_at_genitalia looking_at_penis lying male mammal masturbation nude on_back open_mouth oral oral_masturbation peanut_butter peanut_butter_game penile penile_masturbation penis penis_lick pillow pornography retriever self_lick sex sex_toy slate solo spread_legs spreading story story_in_description tail teeth tongue tongue_out

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog ellipsis exclamation_point futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic domestic_dog futaba_kotobuki golden_retriever hunting_dog male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog ellipsis futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog bulge canid canine canis clothed clothing comic dialogue domestic_dog erection erection_under_clothing futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro balls bird_dog butt canid canine canis comic dialogue domestic_dog duo flaccid foreskin futaba_kotobuki genitals golden_retriever greyscale hunting_dog japanese_text lying male male/male mammal monochrome multiple_scenes namihira_kousuke nude on_back overweight penis ptosis red_panda retriever tail takagi_kyou text tight_foreskin translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text lying male male/male mammal monochrome multiple_scenes namihira_kousuke nude on_back overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog duo ellipsis futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke nude overweight ptosis red_panda retriever takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever greyscale hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

ailurid anthro bird_dog canid canine canis comic dialogue domestic_dog futaba_kotobuki golden_retriever hunting_dog japanese_text male male/male mammal monochrome multiple_scenes namihira_kousuke overweight ptosis red_panda retriever tail takagi_kyou text translated trouble:_the_final_chapter trouble_(series)

2013 big_breasts bird_dog bottomwear bra breasts canid canine canis cleavage clothed clothing domestic_dog female footwear fully_clothed golden_retriever hunting_dog inks kamina1978 mammal monochrome multiple_versions navel nipples nude off/on retriever shirt shoes sketch skirt smile solo topwear underwear

2013 anthro big_breasts bird_dog black_nose blonde_hair blue_eyes bottomwear breasts canid canine canis cleavage clothed clothing domestic_dog english_text female golden_retriever hair hunting_dog kamina1978 mammal melody_(vader120) model_sheet navel nipples nude off/on retriever shirt skirt solo text topwear vader120

anthro big_breasts big_nipples bird_dog bodily_fluids breast_milking breast_play breasts camera canid canine canis cum digital_media_(artwork) domestic_cat domestic_dog english_text excessive_cum excessive_genital_fluids felid feline felis female genital_fluids gideon golden_retriever group huge_breasts huge_nipples hunting_dog husky hyper hyper_breasts hyper_nipples lactating male male/female mammal milk muscular muscular_female nipple_fetish nipple_play nipples nordic_sled_dog projectile_lactation retriever sex spitz text titfuck

absurd_res anal anal_penetration anthro backsack balls bird_dog canid canine canis clothing cutaway dinosaur domestic_dog dromaeosaurid erection facial_markings footwear fox genitals golden_retriever group group_sex head_markings hi_res hunting_dog hypnosis immelmann_(character) jock legwear lying male male/male male_penetrated male_penetrating male_penetrating_male mammal markings mind_control muscular nx-42 on_side open_mouth oral penetrating_while_rimmed penetration penis perineum prehistoric_species reptile retriever rimming saurischian scalie scar sex socks spiral spiral_eyes tail tail_grab tail_pull theropod threesome top_hole train_position trio velociraptor

apron balls bestiality bird_dog blush bodily_fluids canid canine canis clothed clothing domestic_dog drooling duo eyes_closed female female_on_feral feral footwear genitals golden_retriever hair handjob happy happy_sex heart_symbol human human_on_feral hunting_dog inside interspecies japanese_text looking_at_viewer male male/female male_on_human mammal open_mouth penile retriever saliva sex shirt shoes simple_background slippers text tongue tongue_out topwear xxzero

2011 abs anal anal_penetration animal_genitalia anthro balls biceps bird_dog canid canine canis domestic_dog duo erection exile_(road_rovers) fur genitals golden_retriever hi_res hunter hunter_(road_rovers) hunting_dog husky knot male male/male male_penetrated male_penetrating male_penetrating_male mammal marc_leonhardt muscular nordic_sled_dog nude pecs penetration penis piledriver_position red_penis retriever road_rovers sex sheath spitz

2013 all_fours animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro balls big_penis biped bird_dog blue_eyes bodily_fluids bottomless breasts butt canid canine canine_genitalia canine_penis canis chloe_thompson clothed clothing cum cum_from_vagina cum_in_vagina cum_inside detailed_background dialogue digital_media_(artwork) dirty_talk doggystyle domestic_dog duo english_text erection feet female female_penetrated from_behind_position genital_fluids genitals golden_retriever good_girl greyscale hair heart_symbol hi_res hindpaw horn hunting_dog hybrid incest_(lore) inside knot legwear male male/female male_penetrating male_penetrating_female mammal monochrome muscular muscular_male nipples paws penetration penile penile_penetration penis penis_in_vagina pet_praise praise retriever sex shirt skimpy sound_effects speech_bubble stockings tank_top text thick_penis topwear vaginal vaginal_penetration vulva wolfy-nail

2011 anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro bird_dog canid canine canine_genitalia canine_penis canis collar domestic_dog double_penetration ek_goya erection exile_(road_rovers) eyes_closed female female_penetrated fox genitals golden_retriever group hunter_(road_rovers) hunting_dog husky knot male male/female male_penetrating male_penetrating_female mammal mind_control narissa nordic_sled_dog nude penetration penis retriever road_rovers sex spiral spiral_eyes spitz submissive submissive_male vaginal vaginal_penetration

2013 anal anal_penetration anthro balls bird_dog bisexual black-backed_jackal black_hair bodily_fluids breast_grab breast_lick breast_play breasts brown_body brown_fur canid canine canis code_drop cowgirl_position cum cum_in_vagina cum_inside domestic_dog double_penetration erection erik_(tempo) eyes_closed female from_behind_position from_front_position fur genital_fluids genitals golden_retriever group group_sex hair hand_on_breast hunting_dog incest_(lore) jackal licking long_story lying male male/female male/male male_penetrated male_penetrating male_penetrating_male mammal nipples nude on_back on_bottom on_top penetration penis pubes retriever sex slate story story_in_description straddling tess_(tempo) threesome tongue tongue_out trio vaginal vaginal_penetration vulva yellow_body yellow_fur

2013 african_wild_dog all_fours anal anal_penetration animal_genitalia animal_penis anthro bent_over bird_dog bodily_fluids border butt canid canine canine_genitalia canine_penis canis colby collar doggystyle domestic_dog dominant dominant_male duo erection eyes_closed farorenightclaw feet from_behind_position genital_fluids genitals golden_retriever hindpaw hunting_dog makoh male male/male male_penetrated male_penetrating male_penetrating_male mammal moan nude open_mouth pawpads paws penetration penis precum retriever sex submissive white_border wide_hips

anal animal_genitalia animal_penis anthro balls bird_dog blue_eyes breasts brown_eyes canid canine canine_genitalia canine_penis canis chaps clitoris clitoris_piercing clothed clothing collar domestic_dog duo erection female fur genital_piercing genitals golden_retriever hephaestus_isocrates humanoid_pointy_ears hunting_dog knot leash male mammal nipple_piercing nipples nude penis piercing pointy_ears retriever sex_toy slave soroxel tongue tongue_piercing vulva vulva_piercing yellow_body yellow_fur

absurd_res amber_(scooby-doo) anatomically_correct anatomically_correct_genitalia anatomically_correct_vulva animal_genitalia animal_vulva bird_dog building canid canine canine_genitalia canine_vulva canis chihuahua chiquita_(scooby-doo) christmas domestic_dog female female/female feral genitals golden_retriever great_dane group hanna-barbera hi_res holidays house hunting_dog inside irish_setter kissing mammal mastiff masturbation molosser nipples nova_(scooby-doo) pinup pose presenting retriever roxanne_(scooby-doo) ruby-doo scooby-dee scooby-doo scooby-doo_(series) scooby-doo_and_the_alien_invaders setter snow take_your_pick toony toy_dog twindrags vaginal vaginal_masturbation vulva window winter

2012 abs anthro armpit_fetish armpit_sniffing balls biceps bird_dog brown_body brown_fur brown_hair canid canine canis chestnuts_(artist) domestic_dog duo equid equine erection foreskin fur genitals golden_retriever hair handjob hooves horse humanoid_genitalia humanoid_penis hunting_dog interspecies kneeling male male/male mammal muscular musk nipples nude partially_retracted_foreskin pecs penile penis retracted_foreskin retriever sex simple_background sniffing white_background yellow_body yellow_fur