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Number of animals in the world





Here are the animals and their respective number estimated by researchers or statisticians.

We can only be amazed at all these species that swarm on the globe. It is unfortunate to note the little means given to botanists, zoologists, ornithologists, ichthyologists, entomologists, as well as to microbiology to index the living. While each year on the blue planet, 37 million acres are destroyed. Not to mention polluted land, degraded seas and oceans.

We should put the conquest of space aside, knowing that cosmic radiation poses an insoluble problem for the time being in terms of sending humans to the Moon or Mars. And instead focus on preserving the living. Maybe concentrate humans in green megacities and leave the open spaces to the living so that the diversity of the fauna and the flora prevail again.

So if we believe this table, on Earth, we have :

1 quindecillion (thousand of billion of quintillion of quintillion) of microorganisms,
100 decillion (quadrillion of quintillion) of akaryocytes,
500 setpillion (million of quintillion) of plants,
48 quintillion (billion of billion) of insects,
1 quintillion (billion of billion) of crustaceans,
190 quadrillion (million of billion) of molluscs,
45 quadrillion (million of billion) of fishes,
100 trillion (thousand of billion) of earthworms,
396 billion of mammals,
103 billion of reptiles,
31 billion of birds,
2.3 billion of amphibians.

Number of insects in the world
AnimalTypePopulationSource yearSource
BacteriaMicro organism4 x 10^482011NPR
VirusesAkaryocyte1 x 10^352017W3Ask
PhytoplanktonsPlant5 x 10^262017W3Ask
ProtozoaProtist1 x 10^252017W3Ask
NematodaEcdysozoaire1 x 10^222017W3Ask
MitesInsect4,8 x 10^192017W3Ask
GastrotrichsMeiobenthic1 x 10^192017W3Ask
CopepodsCrustacean1 x 10^182017W3Ask
Other algaePlant3 x 10^172017W3Ask
TermitesInsect2,1 x 10^172011NPR
SnailsMollusc1,9 x 10^172017W3Ask
Clover mitesInsect1 x 10^172017W3Ask
RotifersMicro organism1 x 10^172017W3Ask
MosquitoesInsect7 x 10^162017W3Ask
Marine fishFish4 x 10^162011NPR
PlantsPlant3 x 10^162017W3Ask
FliesInsect1,7 x 10^162017W3Ask
ShellfishCrustacean1,9 x 10^162017W3Ask
GrasshopersInsect1,25 x 10^162017W3Ask
GonostomatidaeFish5 x 10^152015Broad, William J
PillbugsInsect3 x 10^152017W3Ask
Dust mitesInsect2,5 x 10^152012National Geographic
AphidsInsect1 x 10^152017W3Ask
Coral polypsCnidarian1 x 10^152017W3Ask
StarfishEchinoderm1 x 10^152017W3Ask
Sea urchinsCrustacean9 x 10^142017W3Ask
Antarctic krillsCrustacean5 x 10^142011NPR
HemipterasInsect5 x 10^142017W3Ask
BeetlesInsect3,5 x 10^142017W3Ask
MilipedesInsect3 x 10^142017W3Ask
SlugsMollusc2,6 x 10^142017W3Ask
FleasInsect2,5 x 10^142017W3Ask
CrabsCrustacean1,25 x 10^142006FAO
AntsInsect1 x 10^142014BBC News
EarthwormsLumbricina1 x 10^141974Nyle C. Brady
TicksInsect1 x 10^142017W3Ask
SquidsMollusc7,3 x 10^132017W3Ask
Face mitesInsect6,5 x 10^132017W3Ask
LicesInsect5 x 10^132017W3Ask
BeesInsect5 x 10^132011FAO
CaterpillarsInsect5 x 10^132017W3Ask
CockroachesInsect4,4 x 10^132017W3Ask
AnchoviesFish3,8 x 10^132010FAO
WaspsInsect1,7 x 10^132017W3Ask
SardinesFish1,3 x 10^132009FAO
JellyfishCnidarian1,3 x 10^132017W3Ask
SowbugsInsect1 x 10^132017W3Ask
LovebugsInsect1 x 10^132017W3Ask
SpidersInsect9,7 x 10^122017The Washington Post
MealybugsInsect5 x 10^122017W3Ask
TreesPlant3 x 10^122015The Independant
BumblebeesInsect2,5 x 10^122017W3Ask
MothsInsect1,6 x 10^122017W3Ask
CricketsInsect1,25 x 10^122017W3Ask
OctopusesMollusc1,1 x 10^122017W3Ask
CuttlefishMollusc1 x 10^122017W3Ask
ButterfliesInsect1 x 10^121986James A. Scott
LadybugsInsect1 x 10^122017W3Ask
Crown-of-thorns starfishEchinoderm1 x 10^122017W3Ask
SilverfishInsect1 x 10^122017W3Ask
CentipedesInsect5 x 10^112017W3Ask
MackerelsFish4,7 x 10^112009FAO
HerringsFish3,9 x 10^112010FAO
BedbugsInsect3 x 10^112017W3Ask
HornetsInsect2 x 10^112017W3Ask
CarpsFish2 x 10^112017W3Ask
EarwigsInsect2 x 10^112017W3Ask
FirefliesInsect1,8 x 10^112017W3Ask
MiceMammal1,7 x 10^112017W3Ask
Wild rabbitsMammal1,4 x 10^112017W3Ask
DragonfliesInsect1 x 10^112017W3Ask
SolesFish1 x 10^112017W3Ask
GobiesFish1 x 10^112017W3Ask
LizardsReptile1 x 10^112017W3Ask
HolothuriesEchinoderm80,000,000,0002017W3Ask
HamstersMammal52,500,000,0002017W3Ask
LeechesMollusc32,500,000,0002017W3Ask
SalmonsFish28,350,000,0002017W3Ask
MantisesInsect24,000,000,0002017W3Ask
ChickensBird21,322,000,0002014Statista
TunasFish11,300,000,0002011NPR
CicadasInsect10,000,000,0002017W3Ask
Brown ratsMammal9,780,511,0002008The Sun
HumansMammal7,523,470,0002017Worldometers
SquirrelsMammal5,897,500,0002017W3Ask
ScorpionsInsect5,000,000,0002017W3Ask
SnakesReptile3,600,000,0002017W3Ask
TroutsFish3,000,000,0002017W3Ask
HaresMammal2,880,000,0002017W3Ask
FrogsAmphibian1,500,000,0002010Live Science
SparrowsBird1,917,344,0002012BirdLife International
Domestic ducksBird1,132,782,0002014Jetpunk Data World
Black ratsMammal1,015,670,0002014Newsweek
Domestic sheepsMammal1,100,000,0002017World Atlas
Stick insectsInsect1,000,000,0002017W3Ask
DovesBird999,458,5002012BirdLife International
CowsMammal998,300,0002017Beef2live
LarksBird951,380,0002012BirdLife International
Domestic goatsMammal860,000,0002017World Atlas
MoraysFish800,000,0002017W3Ask
Domestic pigsMammal784,830,0002016Statista
Domestic rabbitsMammal769,050,0002014Jetpunk Data World
ToadsAmphibian750,000,0002017W3Ask
BlackbirdsBird710,229,7002012BirdLife International
Domestic catsMammal625,000,0002017World Atlas
TurkeysBird461,453,0002014Jetpunk Data World
Domestic dogsMammal425,000,0002017World Atlas
Wild boarsMammal350,000,0002017W3Ask
WoodpeckersBird337,067,0002012BirdLife International
QuailsBird301,565,0002012BirdLife International
PheasantsBird300,473,0002012BirdLife International
SwiftsBird237,600,0002012BirdLife International
Domestic birdsBird250,000,0002017Pet Secure
HedgehogsMammal219,000,0002017W3Ask
CrowsBird210,349,0002012BirdLife International
Stray dogsMammal200,000,0002011WHO
GroupersFish200,000,0002017W3Ask
Water buffaloesMammal172,000,0002011MJAS
Domestic fishFish170,000,0002017Pet Secure
CuckoosBird161,029,0002012BirdLife International
PetrelsBird157,238,0002012BirdLife International
EelsFish150,000,0002017W3Ask
PigeonsBird127,266,7002012BirdLife International
Guinea pigsMammal105,000,0002017W3Ask
DucksBird100,130,8162012BirdLife International
Feral catsMammal100,000,0002013Ecology Global Network
Lab animalsMammal100,000,0002017W3Ask
Spider crabsCrustacean100,000,0002017W3Ask
PrionsBird89,300,0002012BirdLife International
WeaselsMammal80,000,0002017W3Ask
GrousesBird80,125,6002012BirdLife International
JaysBird76,415,0002012BirdLife International
ShearwatersBird74,049,0002012BirdLife International
PorcupinesMammal62,790,0002017W3Ask
HorsesMammal58,000,0002011FAOSTAT
MotmotsBird51,105,0002012BirdLife International
Wood railsBird50,503,0002012BirdLife International
White-necked jacobinsBird50,000,0002012BirdLife International
SalamandersAmphibian50,000,0002017W3Ask
TrogonsBird51,575,0002012BirdLife International
Antarctic prionsBird50,000,0002017World Atlas
PtarmigansBird48,000,0002012BirdLife International
DeersMammal46,710,0002000IUCN
DonkeyMammal40,000,0002011FAOSTAT
OwlsBird42,262,0002012BirdLife International
MurresBird40,000,0002012BirdLife International
Willow ptarmigansBird40,000,0002017World Atlas
PenguinsBird39,808,7002012BirdLife International
TernsBird38,600,0002012BirdLife International
AukletsBird34,800,0002012BirdLife International
FulmarsBird34,300,0002012BirdLife International
PartridgesBird34,068,6002012BirdLife International
MarmotsMammal30,000,0002017W3Ask
Black grousesBird27,500,0002017World Atlas
Blue-crowned motmotsBird27,500,0002017World Atlas
GullsBird27,370,0002012BirdLife International
SealsMammal26,139,0002008IUCN
KitesBird21,312,0002012BirdLife International
PuffinsBird16,300,0002015BirdLife International
EgretsBird16,233,0002015BirdLife International
HeronsBird16,172,0002015Wetlands International
Eurasian wrynecksBird15,600,0002012BirdLife International
DromedariesMammal14,560,0002005ICAR
CamelsMammal14,000,0002010Randome House Digital
ParakeetsBird15,747,5002012BirdLife International
SwordfishFish15,230,0002009FAO
DuikersMammal13,234,0002008IUCN
HawksBird13,132,0002012BirdLife International
Bee-eatersBird13,000,0002012BirdLife International
FerretsMammal12,500,0002017W3Ask
BeaversMammal12,000,0001988Nowak, Ronald M
PinguinsBird12,000,0002017USA Today
MulesMammal10,000,0002011FAOSTAT
CrakesBird10,984,3002012BirdLife International
CormorantsBird10,786,0002012BirdLife International
KingfishersBird10,740,0002012BirdLife International
TinamousBird10,694,0002012BirdLife International
GrebesBird10,649,2002012BirdLife International
FalconsBird10,610,0002012BirdLife International
ElksMammal10,030,0002009Gohunt
CoypusMammal10,000,0002017W3Ask
CapercailliesBird10,000,0002012BirdLife International
ChameleonsReptile10,000,0002017W3Ask
NightjarsBird8,500,0002012BirdLife International
MoorhensBird8,114,0002012BirdLife International
RaysFish8,062,5002017W3Ask
CootsBird8,023,0002012BirdLife International
ChinchillasMammal7,000,0002017W3Ask
CrocodilesReptile6,865,6002014IUCN
BuzzardsBird6,842,0002012BirdLife International
ChachalacasBird6,496,0002012BirdLife International
VulturesBird5,694,2502012BirdLife International
EmeraldsBird5,506,0002012BirdLife International
PootoosBird5,500,0002012BirdLife International
KangaroosMammal5,304,0402008IUCN
CanariesBird5,230,0002012BirdLife International
GeeseBird5,042,7002010Anthony D. Fox
KestrelsBird5,020,0002012BirdLife International
jacamarsBird5,015,5002012BirdLife International
CapybarasMammal5,024,0002017W3Ask
Timor Zebra FinchesBird5,000,0002017W3Ask
RoadrunnersBird5,000,0002012BirdLife International
BudgerigarsBird5,000,0002012BirdLife International
AlligatorsReptile5,000,0002009Telegraph
MarlinsFish4,700,0002009FAO
LoonsBird4,372,0002012BirdLife International
FlamingosBird4,364,0002012BirdLife International
AlbatrossBird3,839,4002012BirdLife International
ArmadillosMammal3,500,0002017W3Ask
IbisesBird2,905,0002012BirdLife International
CaribousMammal2,890,4102016IUCN
ParrotsBird2,613,0002016UNEP-WCMC
SpringboksMammal2,500,0002008IUCN
PolecatsMammal2,495,0002017W3Ask
RavensBird2,320,0002015BirdLife International
HarriersBird2,159,0002012BirdLife International
SwansBird2,158,0002016Wetlands International
Plumbeous railsBird2,000,0002012BirdLife International
ImpalasMammal2,000,0002008IUCN
Dik-diksMammal1,997,6002008IUCN
RaccoonsMammal1,600,0002017W3Ask
Blue wildebeestsMammal1,550,0002008IUCN
BatsMammal1,521,3002008IUCN
MagpiesBird1,802,5002004BirdLife International
MoosesMammal1,500,0002008IUCN
GazellesMammal1,494,0002008IUCN
BushbucksMammal1,340,0002008IUCN
MerlinsBird1,300,0002012BirdLife International
PangolinsMammal1,280,0002017W3Ask
Bluefin tunasFish1,270,0002006IUCN
EaglesBird1,225,0002012BirdLife International
LovebirdsBird1,002,2102012BirdLife International
PelicansBird1,193,9002012BirdLife International
Sea turtlesReptile1,140,0002011FPIR NOAA
Pilot whalesMammal1,158,0002006Taylor, B. L., Baird, R.
SturgeonsFish1,008,0002009IUCN
JackalsMammal1,000,0002017W3Ask
CockatielsBird1,000,0002012BirdLife International
LamasMammal1,000,0002015IUCN
CoyotesMammal891,0002017W3Ask
African buffaloesMammal890,0002008IUCN
Elephant sealsMammal889,0002010IUCN
CranesBird868,3002012BirdLife International
HummingbirdsBird793,0002012BirdLife International
OribisMammal750,0002008IUCN
Plains zebrasMammal750,0002015IUCN
Prairie chickenBird740,0002012BirdLife International
PronghornsMammal700,0002008IUCN
OstrichesBird700,0001979Perrins, Christopher
African leopardsMammal700,0002011IUCN
FoxesMammal672,1002001IUCN
Bottle-nosed dolphinsMammal600,0002006IUCN red list
SteenboksMammal600,0002008IUCN
KudusMammal600,0002008IUCN
Emperor pinguinsMammal595,0002012BBC News
GuanacosMammal589,7502008IUCN
ElephantsMammal550,0002016The Guardian
American bisonsMammal530,0002008IUCN
Minky whalesMammal515,0002012SCIWC
Sea lionsMammal503,9582008IUCN
MeerkatsMammal500,0002015Natural History
KoalasMammal500,0002012IUCN
AntelopesMammal492,0002008IUCN
GibbonsMammal406,5572008IUCN
GemsboksMammal373,0002008IUCN
SunisMammal365,0002008IUCN
HartebeestsMammal362,0002008IUCN
VicuñasMammal347,2732008IUCN
IguanasReptile300,0002008Galapagos Org
PlatypusMammal300,0002008IUCN
WombatMammal300,0002008Taggart and Robinson
Grey wolvesMammal300,0002008IUCN
ChimpanzeesMammal299,7002008IUCN
BoobooksBird290,0002012BirdLife International
Water chevrotainsMammal278,0002008IUCN
AmazonsBird238,7002012BirdLife International
MongoosesMammal219,0002017W3Ask
LechwesMammal212,0002008IUCN
ReedbucksMammal210,0002008IUCN
GorillasMammal206,6802008IUCN
Brown bearsMammal200,0002012IUCN
WaterbucksMammal200,0002008IUCN
GeladasMammal200,0002008IUCN
LemursMammal197,2442008IUCN
MartensMammal187,0002016V.G. Monakhov
SitatungasMammal170,0002008IUCN
BadgersMammal152,1002017W3Ask
HippopotamusMammal150,0002008IUCN
Fennec foxesMammal150,0002017W3Ask
OttersMammal142,6402008IUCN
Common elandsMammal136,0002008IUCN
Kangaroo ratsMammal134,0002004IUCN
PukusMammal130,0002008IUCN
MarmosetsMammal120,0002003IUCN
Fin whalesMammal119,0002008Reilly, S.B.; Bannister, J.L
Mountain goatsMammal119,0002008IUCN
Dall sheepsMammal116,5002008IUCN
BelugasMammal105,3482000IUCN
Aldabra giant tortoisesReptile100,0002004Payne, Roger
Bryde's whalesMammal100,0002016AUT
Japanese serowsMammal100,0002008IUCN
Polynesian ratsMammal100,0002011Amos W., Nichols H. J
GiraffesMammal97,5002016The Guardian
GerenuksMammal95,0002008IUCN
Sharpe's grysboksMammal95,0002008IUCN
IbexMammal90,0002008IUCN
ToucansBird80,0002012BirdLife International
HyaenasMammal77,0002013IUCN
OrangutansMammal76,3002008IUCN
KiwisBird74,0002012BirdLife International
EmusBird70,0002017W3Ask
East African oryxMammal67,0002008IUCN
BettongsMammal63,4002008IUCN
Leatherback turtlesReptile60,0002017WWF
BlackbucksMammal50,0002008IUCN
Killer whalesMammal50,0002013IUCN Red List
BonobosMammal50,0002008IUCN
OkapisMammal50,0002013Hart
CougarsMammal50,0002008IUCN
Grizzly bearsMammal45,0752012Canadian ministry of forests
PeafowlsMammal45,0002005IUCN
ManateesMammal43,2962008IUCN
MacaquesMammal43,2692008IUCN
KlipspringersMammal42,0002008IUCN
LangursMammal37,3642008IUCN
LynxMammal37,3501994De Beaufort
CassowariesBird34,0002012BirdLife International
NyalasMammal32,0002008IUCN
GaursMammal30,0002008IUCN
PumasMammal30,0002017W3Ask
Greenland sharksFish28,0002017W3Ask
BongosMammal28,0002008IUCN
Hammerhead sharksFish26,5002005NOAA Fisheries
Blue whalesMammal25,0002008IUCN
Galapagos giant tortoisesReptile25,0002012Galapagos Org
TamarinsMammal23,4002008IUCN
TapirsMammal22,5002017W3Ask
WarthogMammal22,2502016Swanepoel et al
Gray whalesMammal22,0002008IWC Office
SawsharkFish21,0002017W3Ask
White rhinocerosMammal20,1502011The Guardian
Giant elandsMammal20,0002008IUCN
Red-eared guenonsMammal20,0002008IUCN
LionsMammal20,0002015IUCN
SaigasMammal19,0202003IUCN
WoyliesMammal18,0002011IUCN
Leopard sealsMammal18,0002008IUCN
Black wildebeestsMammal18,0002008IUCN
Grey rheboksMammal18,0002008IUCN
TarucasMammal17,0002008IUCN
Right whalesMammal15,4232009Kenney, Robert D
JaguarsMammal15,0002011WWF
Wild yaksMammal15,0002008IUCN
Grey reef sharksFish15,0002017W3Ask
Bohead whalesMammal14,5102008CDFO
Indian leopardsMammal14,0002014World Atlas
SurilisMammal13,0002008IUCN
AnteatersMammal11,2502017W3Ask
SifakasMammal10,4802008IUCN
Basking sharksFish10,1002007DFO MPO
Javan rusasMammal10,0002008IUCN
Red pandasMammal10,0002015IUCN
CoelacanthsFish10,0002008IUCN
Kangaroo miceMammal10,0002008IUCN
Red goralsMammal10,0002008IUCN
Southern pudúsMammal10,0002008IUCN
Tasmanian devilsMammal10,0002007IUCN
Eastern box turtlesReptile10,0002005J.C. Lee pers.
Silky sharksFish10,0002017W3Ask


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