Implementation
const List<String> animals = [
'aardvark',
'albatross',
'alligator',
'alpaca',
'ant',
'anteater',
'antelope',
'ape',
'armadillo',
'baboon',
'badger',
'barracuda',
'bat',
'bear',
'beaver',
'bee',
'bison',
'boar',
'buffalo',
'butterfly',
'camel',
'capybara',
'caribou',
'cassowary',
'cat',
'caterpillar',
'cattle',
'chamois',
'cheetah',
'chicken',
'chimpanzee',
'chinchilla',
'chough',
'clam',
'cobra',
'cockroach',
'cod',
'cormorant',
'coyote',
'crab',
'crane',
'crocodile',
'crow',
'curlew',
'deer',
'dinosaur',
'dog',
'dogfish',
'dolphin',
'donkey',
'dotterel',
'dove',
'dragonfly',
'duck',
'dugong',
'dunlin',
'eagle',
'echidna',
'eel',
'eland',
'elephant',
'elephant-seal',
'elk',
'emu',
'falcon',
'ferret',
'finch',
'fish',
'flamingo',
'fly',
'fox',
'frog',
'gaur',
'gazelle',
'gerbil',
'giant-panda',
'giraffe',
'gnat',
'gnu',
'goat',
'goose',
'goldfinch',
'goldfish',
'gorilla',
'goshawk',
'grasshopper',
'grouse',
'guanaco',
'guinea-fowl',
'guinea-pig',
'gull',
'hamster',
'hare',
'hawk',
'hedgehog',
'heron',
'herring',
'hippopotamus',
'hornet',
'horse',
'human',
'hummingbird',
'hyena',
'ibex',
'ibis',
'jackal',
'jaguar',
'jay',
'jellyfish',
'kangaroo',
'kingfisher',
'koala',
'komodo-dragon',
'kookabura',
'kouprey',
'kudu',
'lapwing',
'lark',
'lemur',
'leopard',
'lion',
'llama',
'lobster',
'locust',
'loris',
'louse',
'lyrebird',
'magpie',
'mallard',
'manatee',
'mandrill',
'mantis',
'marten',
'meerkat',
'mink',
'mole',
'mongoose',
'monkey',
'moose',
'mouse',
'mosquito',
'mule',
'narwhal',
'newt',
'nightingale',
'octopus',
'okapi',
'opossum',
'oryx',
'ostrich',
'otter',
'owl',
'ox',
'oyster',
'panther',
'parrot',
'partridge',
'peafowl',
'pelican',
'penguin',
'pheasant',
'pig',
'pigeon',
'polar-bear',
'pony',
'porcupine',
'porpoise',
'prairie-dog',
'quail',
'quelea',
'quetzal',
'rabbit',
'raccoon',
'rail',
'ram',
'rat',
'raven',
'red-deer',
'red-panda',
'reindeer',
'rhinoceros',
'rook',
'salamander',
'salmon',
'sand-dollar',
'sandpiper',
'sardine',
'scorpion',
'sea-lion',
'sea-urchin',
'seahorse',
'seal',
'shark',
'sheep',
'shrew',
'skunk',
'snail',
'snake',
'sparrow',
'spider',
'spoonbill',
'squid',
'squirrel',
'starling',
'stingray',
'stinkbug',
'stork',
'swallow',
'swan',
'tapir',
'tarsier',
'termite',
'tiger',
'toad',
'trout',
'turkey',
'turtle',
'vicuña',
'viper',
'vulture',
'wallaby',
'walrus',
'wasp',
'water-buffalo',
'weasel',
'whale',
'wolf',
'wolverine',
'wombat',
'woodcock',
'woodpecker',
'worm',
'wren',
'yak',
'zebra'
];
