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Tree of life

Evolutionary Clades

Skip dry Kingdom-Phylum tables. Explore the animal kingdom through living evolutionary clades, deep family lineages, and the bizarre shared superpowers that connect them.

Featured clade

Cephalopods(Cephalopoda)

Three hearts, blue hemocyanin blood, and skin that functions like a high-speed video screen.

Bigfin SquidBlue-Ringed OctopusCasper OctopusChambered NautilusColossal Squid
13 species profiled
Explore all 13 Cephalopods→

All evolutionary lineages31 clades

545 species total
13 species

Cephalopods

Cephalopoda

Three hearts, blue hemocyanin blood, and skin that functions like a high-speed video screen.

Bigfin SquidBlue-Ringed OctopusCasper OctopusChambered Nautilus
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69 species

Birds

Aves

Feathered surviving theropod dinosaurs with hollow bones, flow-through lungs, and extreme navigation.

Adélie PenguinAmerican CrowAmerican RobinAndean Cock-of-the-Rock
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53 species

Ray-Finned Fishes

Actinopterygii & Sarcopterygii

Hydrodynamic aquatic rulers with lateral line pressure sensors, swim bladders, and electrical weaponry.

African LungfishAlligator GarAmerican PaddlefishAntarctic Icefish
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46 species

Insects

Insecta

Six-legged masters of flight, metamorphosis, compound eyes, and social supercolonies.

American CockroachAntlionArmy AntAsian Giant Hornet
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42 species

Hoofed Mammals

Ungulata

Keratin-hoofed runners equipped with multi-chambered fermentation stomachs and head armor.

African BuffaloAlpacaAlpine ChamoisAmerican Bison
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24 species

Rodents & Lagomorphs

Rodentia & Lagomorpha

Continuously growing chisel teeth, explosive reproductive rates, and architectural engineering.

Alpine MarmotAmerican PikaBlack-Tailed JackrabbitBlack-Tailed Prairie Dog
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22 species

Arachnids & Scorpions

Arachnida

Eight segmented legs, hydraulic joint movement, liquid external digestion, and silk spinning.

Arizona Bark ScorpionAtlantic Horseshoe CrabBold Jumping SpiderBrazilian Wandering Spider
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20 species

Cats & Felines

Felidae

Hyper-carnivorous ambush predators engineered with razor retractile claws and explosive acceleration.

African LionAmur LeopardBengal TigerBlack-Footed Cat
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20 species

Primates

Primates

Large-brained social strategists with grasping digits, stereoscopic depth vision, and tool mastery.

Aye-AyeBonoboBornean OrangutanChimpanzee
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20 species

Snakes

Serpentes

Limbless tactical predators with kinetic skull bones, heat-sensing pits, and biochemical venom.

Ball PythonBlack MambaBoa ConstrictorBoomslang
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18 species

Sharks & Rays

Chondrichthyes

Flexible cartilage skeletons, conveyor-belt replacement teeth, and electrical sensing pore networks.

Australasian Ghost SharkBasking SharkBull SharkCookiecutter Shark
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17 species

Amphibians

Amphibia

Permeable respiratory skin, transformative larval metamorphosis, and potent toxic alkaloids.

AxolotlCane ToadCommon FrogFire Salamander
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15 species

Birds of Prey

Accipitriformes, Falconiformes & Strigiformes

Apex avian hunters with telescopic zoom vision, curved meat-shearing talons, and silent flight.

Bald EagleBarn OwlBearded VultureGolden Eagle
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15 species

Crustaceans

Crustacea

Calcified chitin armor, multi-jointed appendages, and sonic cavitation claw strikes.

American LobsterAntarctic KrillAtlantic Blue CrabCalanus Copepod
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15 species

Lizards & Tuatara

Sauria & Rhynchocephalia

Parietal third eyes, detachable autotomy tails, and microscopic dry-adhesion toe pads.

Armadillo Girdled LizardAsian Water MonitorCentral Bearded DragonFrilled Lizard
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14 species

Insectivores & Ancient Mammals

Afrotheria & Eulipotyphla

Venomous saliva, tactile star-snouts, and ancient evolutionary lineages of the subterranean and aquatic depths.

AardvarkAfrican Bush ElephantAsian ElephantDugong
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13 species

Mustelids & Otters

Mustelidae

Elongated hyper-muscular dynamos with fearless attitudes, scent defense glands, and high metabolisms.

American MinkEurasian OtterEuropean BadgerEuropean Polecat
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12 species

Echinoderms & Worms

Echinodermata & Invertebrata

Water vascular hydraulic systems, cryptobiosis survival, and ambush strike jaws.

Bobbit WormCommon EarthwormCommon StarfishEuropean Medicinal Leech
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11 species

Canids & Wild Dogs

Canidae

Relentless pursuit predators built for long-range endurance, pack coordination, and olfactory tracking.

African Wild Dog (Painted Dog)Arctic FoxCoyoteDhole
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11 species

Hyenas, Mongooses & Allies

Feliformia & Caniformia Allies

Specialized carnivores featuring bone-dissolving stomach acids, venom resistance, and tactical social clans.

BinturongEgyptian MongooseFossaKinkajou
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10 species

Jellyfish & Cnidarians

Cnidaria & Ctenophora

Microscopic pressurized harpoon cells, bioluminescent bells, and cellular immortality.

Beadlet AnemoneBox JellyfishComb JellyHydra
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9 species

Molluscs & Sea Slugs

Mollusca (Gastropoda & Bivalvia)

Mineral-secreting muscular mantles, ribbon-like radula teeth, and stolen solar chloroplasts.

Banana SlugBlue Sea DragonGarden SnailGeography Cone Snail
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9 species

Seals & Sea Lions

Pinnipedia

Blubber-insulated marine carnivores built for icy ocean dives and coastal breeding haul-outs.

Antarctic Fur SealCalifornia Sea LionCrabeater SealHarbor Seal
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9 species

Whales & Dolphins

Cetacea

Fully aquatic oceanic giants with biosonar echolocation, horizontal flukes, and deep-diving lungs.

Beluga WhaleBlue WhaleBottlenose DolphinBowhead Whale
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8 species

Bears

Ursidae

Massive plantigrade tanks combining bone-crushing strength with seasonal metabolic shutdowns.

American Black BearGiant PandaGrizzly BearKodiak Bear
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8 species

Marsupials

Marsupialia

Pouched mammals delivering tiny embryonic young that finish development outside the womb.

Bare-Nosed WombatKoalaQuokkaRed Kangaroo
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7 species

Crocodilians

Crocodilia

Armored prehistoric river lords with hydraulic bite forces and sensory integumentary organs.

American AlligatorAmerican CrocodileBlack CaimanCuban Crocodile
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6 species

Armored Mammals & Sloths

Xenarthra & Pholidota

Keratin scale plate armor, interlocking lumbar vertebrae, and ultra-slow metabolic adaptations.

Giant AnteaterGiant Ground PangolinNine-Banded ArmadilloPink Fairy Armadillo
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5 species

Turtles & Tortoises

Testudines

Bony armored shells fused to ribcages, magnetic navigation, and extreme lifespans.

Alligator Snapping TurtleGreen Sea TurtleIndian Star TortoiseLeatherback Sea Turtle
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2 species

Bats

Chiroptera

True powered flight masters of the night sky equipped with ultrasonic echolocation.

Ghost BatCommon Vampire Bat
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2 species

Monotremes

Monotremata

Egg-laying mammalian living relics featuring electroreceptive bills and venomous spurs.

Short-Beaked EchidnaDuck-Billed Platypus
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