Name an animal that has an X in its name

The rarest possible answer — almost no player finds it.

• Xenopus— The lab frog that powered the first modern pregnancy tests.
• Xerces blue butterfly— First US insect confirmed extinct from human habitat destruction.

Genuinely obscure. Most players never think of it.

• Addax
• Aetonyx
• Alexander Archipelago wolf
• Alexandrine parakeet
• Altex rabbit
• Altispinax
• Alxasaurus
• Ambopteryx
• Amerifax
• Amphioxus
• Animantarx
• Arnoux's beaked whale
• Astrex rabbit
• Auxois
• Axelrod's rainbowfish
• Axios horse
• Axis deer
• Ba Xuyen
• Baryonyx
• Bay lynx
• Becklespinax
• Beltex
• Bigeyed sixgill shark
• Black-rumped waxbill
• Blue Texel
• Blue waxbill
• Bonxie
• Borax Lake chub
• Box crab
• Box-headed blood bee
• Boxador
• Boxelder bug
• Boxer crab
• Boxer pupfish
• Boxer shrimp
• Boxerdoodle
• Boxfish
• Boxlip mullet
• Boxsky
• Boxweiler
• Buxton's jird
• Cambodian forest ox
• Caudipteryx
• Chartreux
• Chinese Guoxia
• Chryxus arctic
• Chuxiongosaurus
• Coburg Fox sheep
• Cornish rex
• Coturnix quail
• Cretan ibex
• Crucifix frog
• Cruxicheiros
• Culex mosquito
• Daoxian goose
• Daxiatitan
• Desert lynx
• Desert Lynx cat
• Devon rex
• Dexter cattle
• Dixie chub
• Dogue de Bordeaux
• Donax clam
• Doxie— The dachshund's nickname sneaks in the X the full name lacks.
• Doxiepoo
• Draconyx
• Dzharaonyx
• Ekrixinatosaurus
• Elopteryx
• Eosinopteryx
• Epidexipteryx
• Erbi Txakur
• Essex pig
• Essex skipper
• Excalibosaurus
• Exclamatory paradise whydah
• Executioner wasp
• Exlana
• Exmoor Horn sheep
• Exotic shorthair
• Exuma Island iguana
• Fenix lobster
• Firefox— The red panda's other English name, browser notwithstanding.
• Flying fox fish
• Foldex
• Fox coral
• Fox kestrel
• Fox moth
• Fox shark
• Fox snake
• Fox sparrow
• Fox squirrel
• Fox tapeworm
• Fox's weaver
• Foxface rabbitfish
• Foxy cisticola
• Foxy lark
• Fylax
• Galaxias
• Galaxy coral
• Galaxy rasbora
• German rex
• Gnathovorax
• Golden Dox
• Gondwanax
• Gongxianosaurus
• Green lynx spider
• Griffon Bruxellois
• Grunting ox
• Gryponyx
• Gulf of Mexico whale
• Harlan's muskox
• Hatzegopteryx
• Hesperonyx
• Hexaprotodon
• Hexi Cashmere goat
• Hexing
• Hexinlusaurus
• Highland Lynx
• Huaxiagnathus
• Huaxiasaurus
• Huaxiazhoulong
• Huxleysaurus
• Invictarx
• Ixworth chicken
• Jaxartosaurus
• Jiangxisaurus
• Jiangxititan
• Jinfengopteryx
• Jurapteryx
• King of Saxony bird-of-paradise
• Kulindapteryx
• Lac La Croix Indian pony
• Latxa
• Lavender waxbill
• Laxmann's shrew
• Lexovisaurus
• Luxembourg Warmblood
• Lynx cowrie
• Lynx point Siamese
• Lynx rabbit
• Lynx spider
• Lythronax
• Manipulonyx
• Manx Loaghtan
• Manx Rumpy
• Manx shearwater
• Maxakalisaurus
• Maximilian's snake-necked turtle
• Maxwell's duiker
• Megacervixosaurus
• Megalonyx
• Meraxes
• Mesonyx
• Mexican alligator lizard
• Mexican barracuda
• Mexican beaded lizard
• Mexican black kingsnake
• Mexican blindcat
• Mexican bluewing
• Mexican burrowing toad
• Mexican chickadee
• Mexican cottontail
• Mexican duck
• Mexican dwarf crayfish
• Mexican eagle
• Mexican fireleg tarantula
• Mexican free-tailed bat
• Mexican golden trout
• Mexican grizzly bear
• Mexican hairy dwarf porcupine
• Mexican hogfish
• Mexican hognose snake
• Mexican hornshark
• Mexican howler monkey
• Mexican jackrabbit
• Mexican jay
• Mexican jumping bean moth
• Mexican lookdown
• Mexican milk snake
• Mexican mole lizard
• Mexican molly
• Mexican mouse opossum
• Mexican parrotlet
• Mexican prairie dog
• Mexican red-kneed tarantula
• Mexican sheartail
• Mexican spider monkey
• Mexican spotted owl
• Mexican tetra
• Mexican vine snake
• Mexican violetear
• Mexican vole
• Mexican whip-poor-will
• Mexican woodrat
• Mexidracon
• Miniature Fox Terrier
• Miracinonyx
• Missouri Fox Trotter
• Mixotoxodon
• Moxotó goat
• Murex
• New Mexico whiptail
• Ngexisaurus
• Ningxiang pig
• Novoolexandrian Draught
• Oaxaca hummingbird
• Oaxaca sparrow
• Oaxacan small-headed rattlesnake
• Onyx cowrie
• Orange-cheeked waxbill
• Osedax
• Ox beetle
• Ox-heart clam
• Oxalaia
• Oxeye dory
• Oxeye herring
• Oxeye scad
• Oxeye tarpon
• Oxford Down
• Oxford Sandy and Black
• Oxleyan pygmy perch
• Oxyaena
• Palaeoloxodon
• Palaeopteryx
• Paleoparadoxia
• Paluxysaurus
• Panchax
• Panthera atrox
• Paradox frog
• Paradox goby
• Paradoxical frog
• Paragalaxias
• Paraxenisaurus
• Paxton's escolar
• Pegomastax
• Phoenix chicken
• Phoenix petrel
• Pigeon tremex
• Pixie frog
• Pixiebob
• Plain xenops
• Planicoxa
• Polish Lynx pigeon
• Polixenes arctic
• Polyonax
• Proplanicoxa
• Protarchaeopteryx
• Pteropelyx
• Pyrrhuloxia
• Qingxiusaurus
• Red-billed leiothrix
• Rex guinea pig
• Rex rabbit
• Rex sole
• Rhinorex
• Roux du Valais
• Ruixinia
• Sanxiasaurus
• Saurophaganax
• Saxaul sparrow
• Saxon pigeon
• Saxony duck
• Scansoriopteryx
• Scaphonyx
• Scipionyx
• Selkirk rex
• Sellacoxa
• Sex-link chicken
• Sexton beetle
• Sexy shrimp
• Shanxia
• Shixinggia
• Shrub-ox
• Silver Fox rabbit
• Similicaudipteryx
• Sinocalliopteryx
• Sinosauropteryx
• Six-banded armadillo
• Six-belted clearwing
• Six-eyed sand spider
• Six-holed keyhole urchin
• Six-lined racerunner
• Six-spot burnet
• Six-spotted fishing spider
• Six-spotted tiger beetle
• Six-tubercled Amazon River turtle
• Six-wired bird-of-paradise
• Sixbanded angelfish
• Sixbar grouper
• Sixbar wrasse
• Sixfinger threadfin
• Sixgill sawshark
• Sixgill shark
• Sixgill stingray
• Sixline wrasse
• Sixspine butterflyfish
• Sixspot goby
• Snuffbox mussel
• Spinifex hopping mouse
• Spinifex pigeon
• Spinifexbird
• Spiny box puffer
• Spix's macaw
• Spix's night monkey
• Spix's whiptail
• St. Croix anole
• St. Croix ground lizard
• St. Croix sheep
• St. Croix snaketail
• Stenopelix
• Streaked xenops
• Styxosaurus
• Sussex cattle
• Sussex chicken
• Sussex rabbit
• Sussex spaniel
• Swee waxbill
• Swiss Fox rabbit
• Texacephale
• Texan Pioneer
• Texas alligator lizard
• Texas antelope squirrel
• Texas blind salamander
• Texas blind snake
• Texas brown tarantula
• Texas cichlid
• Texas coral snake
• Texas garter snake
• Texas Heeler
• Texas horned lizard
• Texas indigo snake
• Texas kangaroo rat
• Texas lyre snake
• Texas night snake
• Texas pocket gopher
• Texas rat snake
• Texas spiny lizard
• Texas tortoise
• Texasetes
• Texel
• Texon
• Textile cone
• Three-toed box turtle
• Toxodon
• Toxostome
• Tucuxi
• Tupuxuara
• Tux-Zillertal
• Tuxedo cat
• Tuxedo darter
• Tuxedo urchin
• Tuxpan splitfin
• Tuxtla quail-dove
• Ural Rex
• Uromastyx
• Vallibonavenatrix
• Vaux's swift
• Verreaux's eagle
• Verreaux's eagle owl
• Verreaux's sifaka
• Violet-eared waxbill
• Vu Quang ox
• Wanxi white goose
• Wax moth
• Wax scale
• Waxbill
• Waxeye
• Waxy monkey tree frog
• Wessex saddleback
• White-throated oxylabes
• Wiwaxia
• Xalda
• Xami hairstreak
• Xanthippe's shrew
• Xantic sargo
• Xantus swimming crab
• Xantus's becard
• Xantus's hummingbird
• Xantus's leaf-toed gecko
• Xantus's murrelet
• Xavier's greenbul
• Xaxi Ardia
• Xeme
• Xenacanthus
• Xenagama
• Xenia coral
• Xenicibis
• Xenoceratops
• Xenoposeidon
• Xenops
• Xenosaurus
• Xenosmilus
• Xenotarsosaurus
• Xenovenator
• Xerus
• Xiangyunloong
• Xianshanosaurus
• Xiaoheishan slug-eater snake
• Xiaosaurus
• Xiaotingia
• Xiasi dog
• Xigou
• Xilingol horse
• Xinghesaurus
• Xingtianosaurus
• Xingu corydoras
• Xingu River ray
• Xingu scale-backed antbird
• Xingu scythebill
• Xingu silky anteater
• Xingxiulong
• Xinjiang Brown
• Xinjiang Finewool
• Xinjiang goat
• Xinjiang ground-jay
• Xinjiangovenator
• Xinjiangtitan
• Xiongguanlong
• Xiphactinus
• Xixianykus
• Xixiasaurus
• Xiyunykus
• Xuanhanosaurus
• Xuanhuaceratops
• Xuanhuasaurus
• Xuhai goat
• Xunmenglong
• Xupu goose
• Xuthus swallowtail
• Xuwulong
• Yellow-spotted hyrax
• Yunxianosaurus
• Yuxisaurus
• Zalmoxes

Uncommon — only a minority of players land here.

• Archaeopteryx
• Dracorex
• Exmoor pony
• Fox terrier
• Hyrax— Guinea-pig-sized, yet the elephant's closest living relative.
• Ibex
• Mexican wolf
• Oryx
• Oxpecker
• Queen Alexandra's birdwing
• Raptorex
• Sphinx moth
• Texas longhorn
• Vixen— A female fox, so the X arrives by marriage.
• Waxwing
• Wild ox
• X-ray tetra
• Xoloitzcuintli— Aztec mythology cast this dog as a guide for souls.

A solid, middling pick shared with plenty of other players.

• Box jellyfish
• Box turtle
• Boxer
• Flying fox
• Foxhound
• Manx cat
• Muskox
• Sphynx cat
• T. rex

An overthought pick that scores below the middle of the board.

• Axolotl— Regrows limbs, spine, and even parts of its own brain.

The most common answer on the board.

• Fox
• Lynx
• Ox