Simple categories matching nocturnal:

• animal,
• creature,
• reptile,
• species,
• lemur,
• fish,
• varmint,
• predator,
• insect,
• denizen,
• gecko,
• mammal,
• scavenger,
• carnivore,
• cat,
• feeder,
• insectivore,
• prey,
• rodent,
• lepidopteran,
• critter,
• invertebrate,
• movement,
• lizard,
• pest,
• song,
• disturbance,
• amphibian,
• bug,
• form,
• organism,
• pollinator,
• raptor,
• behavior,
• bird,
• activity,
• snake,
• crustacean,
• inhabitant,
• fauna,
• marsupial,

Members with property nocturnal:

• musk_rat,
• raccoon,
• shark,
• deer,
• owl,
• gecko,
• indiana_bat,
• fox,
• certain_snake,
• carnivore,
• whippoorwill,
• moth,
• jackal,
• moth_lepidoptera,
• bat,
• hoary_bat,
• conger,
• wild_pig,
• zombie_pirate,
• tigers,
• honey_possum,
• wrasse,
• small_cat,
• tree_boa,
• civet,
• porcupine,
• serval,
• native_rodent,
• aardvark,
• scorpion,
• certain_catfish,
• barred-owl_call,
• genet,
• mouse_lemur,
• smaller_cat,
• hippo,
• spotlight_search,
• grass_owl,
• common_raccoon,
• caracal,
• genet_cat,
• goatsucker,
• sunset_hunter,
• grasshopper,
• guacharo,
• bettong,
• bush_rat,
• awesome_leopard,
• insect,
• nocturnal_seizure,
• bird,
• wallaby,
• primates,
• lizard,
• black_crappie,
• mouse,
• rattlesnake,
• cape_fox,
• slug,
• skunk,
• stingray,
• bigeye,
• tawny_frogmouth,
• jerboa,
• blacktail_deer,
• mink,
• skunk_fox,
• shrimp,
• deer_mouse,
• armadillo,
• hamster,
• flying_beetle,
• cutworm,
• eagle,
• myriapod,
• snake,
• rabbit,
• dolphin,
• hyena,
• hawk,
• giant,
• kiwi,
• elusive_leopard,
• wood-rat,
• squirrelfish,
• vole,
• seed_collection,
• spring_hare,
• koala,
• octopus,
• coyote,
• several_cat,
• kinkajou,
• australian_owlet,
• bush_pig,
• juvenile_pollock,
• herring,
• brown_hyaena,
• cowrie,
• owl_strigiformes,
• moray,
• rare_aardwolf,
• voodoo_woman,
• squirrel,
• anteater,
• owl_monkey,
• capybara,
• anuran,
• rat,
• true_cricket,
• chameleon,
• brown_lemur,
• oil_bird,
• possum,
• hare,
• small_owl,
• hedgehog,
• potoroo,
• great_cat,
• leopard,
• caracul,
• shrew,
• horned_owl,
• honey,
• honey-badger_ratel,
• wolf,
• silverfish,
• copperhead,
• crow,
• predation,
• flying_squirrel,
• dormouse,
• lynx,
• jaguarundi,
• spiny_lobster,
• striped_skunk,
• musky_rat,
• seizure,
• lobster,
• nightjar,
• rodent,
• leafhopper,
• coral_polyp,
• roaming_house,
• stealthy_leopard,
• tarsier,
• night_ape,
• alligator,
• fishing_cat,
• sphingid_moth,
• mollusk,
• hunting,
• wily_hyena,
• opossum,
• centipede,
• leach_petrel,
• beetle,
• aardwolf,
• common_bat,
• leopard_gecko,
• pangolin,
• desert_hare,
• lesser_bushbaby,
• hula_tree,
• predator,
• cardinalfish,
• caprimulgid,
• peromyscus_mouse,
• reading,
• mongoose,
• hyrax,
• translucent_tree-frog,
• leaf_hopper,
• python,
• binturong,
• firefly,
• clouded_leopard,
• pademelon,
• hawkmoth,
• malayan_porcupine,
• puma,
• glow_worm,
• excessive_wind,
• bat_inspection,
• bush_cricket,
• invertebrate,
• bushbaby,
• nighthawk,
• serval_cat,
• spiny_anteater,
• wild_boar,
• nocturnal_bird,
• soldierfish,
• common_frog,
• caiman,
• catfish,
• tree-frog,
• monkey,
• music,
• boa,
• curlew,
• roach,
• horn_shark,
• toddy_cat,
• wild_rodent,
• spanish_dancer,
• crab,
• certain_bird,
• porcupines,
• glowworm,
• syrian_hamster,
• squid,
• kitten,
• tree_hyrax,
• cat,
• eel,
• toad,
• kangaroo,
• greater_curassow,
• ringtail_cat,
• small_wolf,
• sloth,
• flying_fox,
• tobacco-hornworm_moth,
• cat_coati,
• stoat,
• ocelot,
• common_toad,
• ringtail_possum,
• wild_cat,
• grouper,
• silky_anteater,
• whip_spider,
• paca,
• tuatara,
• cricket,
• owl_species,
• large_cat,
• crabs,
• termite,
• african_wildcat,
• bandicoot,
• jaguar,
• frog,
• plant_examination,
• bush,
• cockroach,
• lion,
• bilby,
• weasel,
• racoon_opossum,
• foraging,
• laboratory_rat,
• wombat,
• night_monkey,
• katydid,
• dog,
• bobcat,
• spider,
• goose,
• black_caiman,
• beaver,
• fisher,
• agile_frog,
• amphibian,
• finding_mate,
• jaguarondi,