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- Hacha de plata (Chordata, Actinopterygii, Characiformes, Thoracocharax)
- Halcón (Chordata, Aves, Falconiformes, Falco)
- H. abejero (Chordata, Aves, Accipitriformes, Pernis)
- H. barrado (Chordata, Aves, Falconiformes, Micrastur)
- H. crestado (Chordata, Aves, Falconiformes, Falco)
- H. de cola larga (Chordata, Aves, Falconiformes, Falco)
- Halcón busardo (Chordata, Aves, Accipitriformes, Buteo)
- Halcón palomero ➡ esmerejón (Chordata, Aves, Falconiformes, Falco)
- Halcón peregrino ➡ neblí (Chordata, Aves, Falconiformes, Falco)
- Halconcillo negro (Chordata, Aves, Falconiformes, Falco)
- Hámster (Chordata, Mammalia, Rodentia, Cricetinae)
- H. común = h. de vientre (Chordata, Mammalia, Rodentia, Cricetus)
- H. negro (Chordata, Mammalia, Rodentia, Mesocricetus)
- H. dorado (Chordata, Mammalia, Rodentia, Mesocricetus)
- H. enano (Chordata, Mammalia, Rodentia, Phodopus)
- H. gris (Chordata, Mammalia, Rodentia, Cricetinae)
- Hangul
- Hanuman ➡ langures (Chordata, Mammalia, Primates, Semnopithecus)
- Helefrine
- Helizoo
- Heloderma mexicano = h. granuloso (Chordata, Reptilia, Squamata, Heloderma)
- Hemípoda de collar (Chordata, Aves, Charadriiformes, Turnix)
- Hemípoda listado (Chordata, Aves, Charadriiformes, Turnix)
- H. pechinegro (Chordata, Aves, Charadriiformes, Turnix)
- Hepiale (Arthropoda, Insecta, Lepidoptera, Korscheltellus)
- H. australiana (Arthropoda, Insecta, Lepidoptera, Oncopera)
- H.común europea (Arthropoda, Insecta, Lepidoptera, Korscheltellus)
- H. de las curvas (Arthropoda, Insecta, Lepidoptera, Korscheltellus)
- H. dorada (Arthropoda, Insecta, Lepidoptera, Triodia)
- H. geográfica europea (Arthropoda, Insecta, Lepidoptera, Korscheltellus)
- Herrerillo capuchino = paro (Chordata, Aves, Passeriformes, Lophophanes)
- H. crestado(Chordata, Aves, Passeriformes, Lophophanes)
- H. común (Chordata, Aves, Passeriformes, Cyanistes)
- Herrero ➡ ranitas arborícolas (Chordata, Amphibia, Anura, Hyla)
- Hespérido (Arthropoda, Insecta, Lepidoptera, Hesperia)
- H. de manchas plateadas (Arthropoda, Insecta, Lepidoptera, Hesperia)
- H. del plátano (Arthropoda, Insecta, Lepidoptera, Erionota)
- H. grande (Arthropoda, Insecta, Lepidoptera, Hesperia)
- H. grisáceo (Arthropoda, Insecta, Lepidoptera, Pyrgus)
- H. jaspeado (Arthropoda, Insecta, Lepidoptera, Carcharodus)
- H. regente (Arthropoda, Insecta, Lepidoptera, Trapezites)
- H. sudafricano (Arthropoda, Insecta, Lepidoptera, Gegenes)
- Hidra (Cnidaria, Hydrozoa, Hydroida, Hydra)
- H. delgada (Cnidaria, Hydrozoa, Hydroida, Hydra)
- H. parda (Cnidaria, Hydrozoa, Hydroida, Hydra)
- H. verde (Cnidaria, Hydrozoa, Hydroida, Hydra)
- Hidrómetra (Arthropoda, Insecta, Hemiptera, Hydrometra)
- Hidrozoos arborescentes (Cnidaria, Hydrozoa, Anthoathecata, Tubularia)
- Hiena (Chordata, Mammalia, Carnivora, Hyaena)
- H. manchada = reidora (Chordata, Mammalia, Carnivora, Crocuta)
- H. parda (Chordata, Mammalia, Carnivora, Hyaena)
- H. rayada (Chordata, Mammalia, Carnivora, Hyaena)
- Hiena de El Cabo (Chordata, Mammalia, Carnivora, Proteles)
- Hiperolinos (Chordata, Amphibia, Anura, Hyperolius)
- Hiperolia de cinco líneas (Chordata, Amphibia, Anura, Hyperolius)
- H. espinosa dorada (Chordata, Amphibia, Anura, Hyperolius)
- H. parda y blanca (Chordata, Amphibia, Anura, Hyperolius)
- H. gigante (Chordata, Amphibia, Anura, Hyperolius)
- H. Horstock = h. de los aros (Chordata, Amphibia, Anura, Hyperolius)
- H. pintada= h. jaspeada (Chordata, Amphibia, Anura, Hyperolius)
- H. pondo (Chordata, Amphibia, Anura, Hyperolius)
- H. verde (Chordata, Amphibia, Anura, Hyperolius)
- Hipogloso (Chordata, Actinopterygii, Pleuronectiformes, Hippoglossus)
- H. del Atlántico (Chordata, Actinopterygii, Pleuronectiformes, Hippoglossus)
- H. del Ártico (Chordata, Actinopterygii, Pleuronectiformes, Reinhardtius)
- Hipopótamo (Chordata, Mammalia, Artiodactyla, Hippopotamus)
- H. pigmeo (Chordata, Mammalia, Artiodactyla, Choeropsis)
- Hipotrago (Chordata, Mammalia, Artiodactyla, Hippotragus)
- H. azul = blaubok (Chordata, Mammalia, Artiodactyla, Hippotragus)
- H. negro= antílope sable = egócero negro (Chordata, Mammalia, Artiodactyla, Hippotragus)
- H. gigante (Chordata, Mammalia, Artiodactyla, Hippotragus)
- H. roano = antílope caballo (Chordata, Mammalia, Artiodactyla, Hippotragus)
- Hoacín (Chordata, Aves, Opisthocomiformes, Opisthocomus)
- Hoco (Chordata, Aves, Galliformes, Crax)
- H. blanco (Chordata, Aves, Galliformes, Crax)
- H. cretado (Chordata, Aves, Galliformes, Crax)
- H. de barbillas rojas (Chordata, Aves, Galliformes, Crax)
- H. de casquete (Chordata, Aves, Galliformes, Pauxi)
- H. azul (Chordata, Aves, Galliformes, Crax)
- H. de cresta blanca (Chordata, Aves, Galliformes, Crax)
- H. de pico de navaja (Chordata, Aves, Galliformes, Mitu)
- Hoco (gran) (Chordata, Aves, Galliformes, Crax)
- Holoturia (Echinodermata, Holothuroidea, Aspidochirotida, Holothuria)
- H. común europea (Echinodermata, Holothuroidea, Aspidochirotida, Holothuria)
- H. excavadora (Echinodermata, Holothuroidea, Aspidochirotida, Holothuria)
- H. real = alpargata (Echinodermata, Holothuroidea, Aspidochirotida, Holothuria)
- Horadarrocas ➡ barrena (Mollusca, Bivalvia, Myida, Pholas)
- Hormiga blanca ➡ termes (Arthropoda, Insecta, Blattodea, Reticulitermes)
- Hormiga común (Arthropoda, Insecta, Hymenoptera, Formica)
- Hormiga león (Arthropoda, Insecta, Neuroptera, Myrmeleon)
- Hormiga mirmicina (Arthropoda, Insecta, Hymenoptera, Myrmica)
- Hormiga negra (Arthropoda, Insecta, Hymenoptera, Lasius)
- Hormigas panaderas (Arthropoda, Insecta, Hymenoptera, Messor)
- Hormigas legionarias (Arthropoda, Insecta, Hymenoptera, Dorylus)
- H. de África (Arthropoda, Insecta, Hymenoptera, Dorylus)
- H. de América del Sur (Arthropoda, Insecta, Hymenoptera, Eciton)
- Hormigas mieleras ➡ hormigas odre (Arthropoda, Insecta, Hymenoptera, Myrmecocystus)
- Hormigas odre (Arthropoda, Insecta, Hymenoptera, Myrmecocystus)
- Hormigas parasol (Arthropoda, Insecta, Hymenoptera, Atta)
- Hormigas recolectoras (Arthropoda, Insecta, Hymenoptera, Pogonomyrmex)
- H. americanas (Arthropoda, Insecta, Hymenoptera, Pogonomyrmex)
- Hormigas rojas (Arthropoda, Insecta, Hymenoptera, Formica)
- H. común (Arthropoda, Insecta, Hymenoptera, Formica)
- H. peluda = hormiga de pradera (Arthropoda, Insecta, Hymenoptera, Formica)
- Hormiguero (Chordata, Mammalia, Pilosa, Myrmecophaga)
- Horneros (Chordata, Aves, Passeriformes, Furnarius)
- H. coliespinoso (Chordata, Aves, Passeriformes, Phacellodomus)
- H. de Des Mur (Chordata, Aves, Passeriformes, Furnarius)
- H. de pecho claro (Chordata, Aves, Passeriformes, Furnarius)
- H. constructor de fortalezas (Chordata, Aves, Passeriformes, Furnarius)
- H. de cola afilada (Chordata, Aves, Passeriformes, Asthenes)
- H. limpiahojas (Chordata, Aves, Passeriformes, Sclerurus)
- H. minador común (Chordata, Aves, Passeriformes, Geositta)
- H. recolector de leña (Chordata, Aves, Passeriformes, Anumbius)
- H. rojo (Chordata, Aves, Passeriformes, Furnarius)
- H. sacudecolas (Chordata, Aves, Passeriformes, Cinclodes)
- H. terrícola (Chordata, Aves, Passeriformes, Upucerthia)
- H. sacudetroncos (Chordata, Aves, Passeriformes, Synallaxis)
- Hubara (Chordata, Aves, Otidiformes, Chlamydotis)
- Huemul ➡ ciervos sudamericanos (Chordata, Mammalia, Artiodactyla, Hippocamelus)
- Huia (Chordata, Aves, Passeriformes, Heteralocha)
- Humpback ➡ salmón del Pacífico (Chordata, Actinopterygii, Salmoniformes, Oncorhynchus)
- Hurón (Chordata, Mammalia, Carnivora, Mustela)
- H. albino (Chordata, Mammalia, Carnivora, Mustela)
- H. de patas negras (Chordata, Mammalia, Carnivora, Mustela)
- H. domesticado (Chordata, Mammalia, Carnivora, Mustela)
- Hutía ➡ jutía (Chordata, Mammalia, Rodentia, Capromys)