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Animals are multicellular eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs. The study of animals is called zoology.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Giant_Panda_2004-03-2.jpg/220px-Giant_Panda_2004-03-2.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/47/Monachoides_vicinus_dart_lateral.jpg/220px-Monachoides_vicinus_dart_lateral.jpg)
Animals may be listed or indexed by many criteria, including taxonomy, status as endangered species, their geographical location, and their portrayal and/or naming in human culture.
By common name
edit- List of animal names (male, female, young, and group)
By aspect
edit- List of common household pests
- List of animal sounds
- List of animals by number of neurons
- Largest and heaviest animals
By domestication
editBy eating behaviour
editBy endangered status
editBy extinction
editBy region
editBy individual (real or fictional)
editReal
edit- Lists of snakes
- List of individual cats
- List of giant squids
- List of individual elephants
- List of historical horses
- List of individual apes
- List of individual bears
- List of individual birds
- List of individual bovines
- List of individual cetaceans
- List of individual dogs
- List of individual monkeys
- List of individual pigs
- List of wolves
- List of wealthiest animals
Fictional
edit- List of fictional bears
- List of fictional birds
- List of fictional cats
- List of fictional pachyderms
- List of fictional pigs
- List of fictional dogs
- List of fictional horses
- List of fictional snakes
- List of fictional arthropods
- List of fictional wolves
- List of fictional worms
- List of fictional penguins
- List of fictional turtles
- List of fictional big cats
- List of fictional apes
- List of fictional frogs and toads
- List of fictional primates
By taxonomical classification
editPhyla
editThe animal Kingdom contains some 35 extant phyla.
Basal animals are delineated according to the following cladogram:
Choanozoa (950) | |
Animals: Porifera, Diploblasts
Diploblasts: Ctenophora, ParaHoxozoa
ParaHoxozoa: Placozoa, Cnidaria, Bilateria/Triploblast
Bilateria: Xenacoelomorpha, Nephrozoa
Nephrozoa: Protostomes, Deuterostomes
- Phylum Proarticulata † Disputed if this is in or out of Bilateria and Phylum Xenacoelomorpha is basal
- Phylum Chordata
- Ambulacraria (unranked)
- Phylum Hemichordata
- Phylum Echinodermata
- Phylum Cambroernida †
- Phylum Saccorhytida?[1] †
- Cycloneuralia (unranked)
- Scalidophora (unranked)
- Phylum Kinorhyncha
- Phylum Loricifera
- Phylum Priapulida
- Nematoida (unranked)
- Phylum Nematoda
- Phylum Nematomorpha
- Scalidophora (unranked)
- Panarthropoda (unranked)
- Phylum Onychophora
- Tactopoda (unranked)
- Phylum Tardigrada
- Phylum Arthropoda
- Gnathifera
- Phylum Gnathostomulida
- Phylum Rotifera
- Mesozoa
- Phylum Dicyemida
- Phylum Orthonectida
- Rouphozoa
- Phylum Gastrotricha
- Phylum Platyhelminthes
- Lophotrochozoa
- Phylum Hyolitha †
- Phylum Annelida
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cycliophora
- Phylum Entoprocta
- Phylum Mollusca
- Phylum Nemertea
- Phylum Phoronida
Chordata
editFish
editAmphibians
editReptiles
edit- List of reptiles
- List of ichthyosaur genera
- List of pterosaur genera
- List of plesiosaur genera
- List of dinosaur genera
- List of snakes
- List of snake genera
- List of boine species and subspecies
- List of erycine species and subspecies
- List of pythonid species and subspecies
- List of tropidophiid species and subspecies
- List of uropeltid species and subspecies
- List of crotaline species and subspecies
- List of viperine species and subspecies
- List of anomalepidid species and subspecies
- List of leptotyphlopid species and subspecies
- List of typhlopid species and subspecies
- List of Testudines families (tortoises, turtles and terrapins)
References
edit- ^ Liu, Yunhuan; Carlisle, Emily; Zhang, Huaqiao; Yang, Ben; Steiner, Michael; Shao, Tiequan; Duan, Baichuan; Marone, Federica; Xiao, Shuhai; Donoghue, Philip C. J. (17 August 2022). "Saccorhytus is an early ecdysozoan and not the earliest deuterostome". Nature. 609 (7927): 541–546. Bibcode:2022Natur.609..541L. doi:10.1038/s41586-022-05107-z. ISSN 1476-4687. PMID 35978194. S2CID 251646316.