List of animals
The giant panda is a vulnerable species The use of love darts by the land snail Monachoides vicinus sexual selection Adult silk worm 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 .
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
By aspect
By domestication
Water buffalo
By eating behaviour
By endangered status
The Andean mountain cat is an endangered species .
By extinction
List of extinct animals
By region
Real
Fictional
By taxonomical classification
Phyla
The relative number of species contributed to the total by each phylum of animals The animal Kingdom contains some 35 extant phyla.
Basal animals are delineated according to the following cladogram :
Animals : Porifera Diploblasts
Diploblasts : Ctenophora ParaHoxozoa
ParaHoxozoa : Placozoa Cnidaria Bilateria /Triploblast
Bilateria : Xenacoelomorpha Nephrozoa
Nephrozoa : Protostomes , Deuterostomes
Chordata
Fish
Amphibians
Reptiles
References
^ 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 .
