Grooming (also called preening) is the

art Art is a diverse range of cultural activity centered around ''works'' utilizing creative or imaginative talents, which are expected to evoke a worthwhile experience, generally through an expression of emotional power, conceptual ideas, tec ...

and

practice Practice or practise may refer to: Education and learning * Practice (learning method), a method of learning by repetition * Phantom practice, phenomenon in which a person's abilities continue to improve, even without practicing * Practice-based ...

of cleaning and maintaining parts of the body. It is a species-typical behavior.

In animals

Individual

animal Animals are multicellular, eukaryotic organisms in the Biology, biological Kingdom (biology), kingdom Animalia (). With few exceptions, animals heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, ...

s regularly clean themselves and put their fur, feathers or other

skin Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings, such as the arthropod exoskeleton, have different ...

coverings in good order. This activity is known as personal grooming, a form of

hygiene Hygiene is a set of practices performed to preserve health. According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refer ...

. Extracting foreign objects such as

insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...

s, leaves,

dirt Dirt is any matter considered unclean, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include: * Debris: scattered pieces of waste or remains * Du ...

, twigs and parasites is a form of grooming. Among animals,

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

s spend considerable time

preening Preening is a found in birds that involves the use of the beak to position feathers, interlock feather that have become separated, clean plumage, and keep ectoparasites in check. Feathers contribute significantly to a bird's insulation, waterp ...

their

feather Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and an exa ...

s. This is done to remove

ectoparasite Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted str ...

s, keep the feathers in good aerodynamic condition, and waterproof them. To do that, they use the

preen oil The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of preening. It is located dorsally at th ...

secreted by the

uropygial gland The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of Preening (bird), preening. It is locate ...

, the dust of

down feathers The down of birds is a layer of fine feathers found under the tougher exterior feathers. Very young birds are clad only in down. Powder down is a specialized type of down found only in a few groups of birds. Down is a fine thermal insulator and ...

, or other means such as dust-bathing or

anting Anting () is a town in Jiading District, Shanghai, bordering Kunshan, Jiangsu to the west. It has 96,000 inhabitants and, after the July 2009 merger of Huangdu (), an area of .

. During

oil spill An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into th ...

animal conservation Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an i ...

ists that rescue

penguin Penguins are a group of aquatic flightless birds from the family Spheniscidae () of the order Sphenisciformes (). They live almost exclusively in the Southern Hemisphere. Only one species, the Galápagos penguin, is equatorial, with a sm ...

s sometimes dress them in knitted sweaters to stop them from preening and thereby ingesting the

mineral oil Mineral oil is any of various colorless, odorless, light mixtures of higher alkanes from a mineral source, particularly a distillate of petroleum, as distinct from usually edible vegetable oils. The name 'mineral oil' by itself is imprecise, ...

, which is poisonous. Monkeys may also pick out nits from their fur or scratch their rears to keep themselves clean.

Cats The cat (''Felis catus''), also referred to as the domestic cat or house cat, is a small domesticated carnivorous mammal. It is the only domesticated species of the family Felidae. Advances in archaeology and genetics have shown that the ...

are well known for their extensive grooming. Cats groom so often that they often produce

hairball A hairball is a small collection of hair or fur formed in the stomach of animals, and uncommonly in humans, that is occasionally vomiting, vomited up when it becomes too big. Hairballs are primarily a tight elongated cylinder of packed fur, but ...

s from the fur they ingest. Many mammal species also groom their genitals after

copulation Sexual intercourse (also coitus or copulation) is a sexual activity typically involving the insertion of the erect male penis inside the female vagina and followed by thrusting motions for sexual pleasure, reproduction, or both.Sexual inte ...

Grooming as a social activity

Many

social animal Sociality is the degree to which individuals in an animal population tend to associate in social groups (gregariousness) and form cooperative societies. Sociality is a survival response to evolutionary pressures. For example, when a mother was ...

s adapt preening and grooming behaviors for other social purposes such as bonding and the strengthening of

social structure In the social sciences, social structure is the aggregate of patterned social arrangements in society that are both emergent from and determinant of the actions of individuals. Likewise, society is believed to be grouped into structurally rel ...

s. Grooming plays a particularly important role in forming social bonds in many primate species, such as

chacma baboon The chacma baboon (''Papio ursinus''), also known as the Cape baboon, is, like all other baboons, from the Old World monkey family. It is one of the largest of all monkeys. Located primarily in southern Africa, the chacma baboon has a wide vari ...

s and

wedge-capped capuchin The wedge-capped capuchin or Guianan weeper capuchin (''Cebus olivaceus'') is a capuchin monkey from South America. It is found in northern Brazil, Guyana and Venezuela. ''Cebus olivaceus'' is known to dwell in tall, primary forest and travel ove ...

Mutual grooming in human relationships

In humankind, mutual grooming relates closely to

social grooming Social grooming is a behavior in which social animals, including humans, clean or maintain one another's bodies or appearances. A related term, allogrooming, indicates social grooming between members of the same species. Grooming is a major s ...

, which is defined as the process by which human beings fulfill one of their basic instincts, such as socializing, cooperating and learning from each other. In research conducted by Holly Nelson (from the

University of New Hampshire The University of New Hampshire (UNH) is a Public university, public Land-grant university, land-grant research university with its main campus in Durham, New Hampshire, United States. It was founded and incorporated in 1866 as a land grant coll ...

), individuals who chose their romantic partner reported more mutual grooming than others who focused in other types of relationships. Hence, this study hypothesized that mutual grooming related to relationship satisfaction, trust and previous experience of affection within the family. They claim that even though humans do not groom each other with the same fervor that other species do, they are groomers par excellence. Therefore, human mutual grooming plays an important role in

pair bond In biology, a pair bond is the strong affinity that develops in some species between a mating pair, often leading to the production and rearing of young and potentially a lifelong bond. Pair-bonding is a term coined in the 1940s that is frequently ...

ing. In the same investigation, researchers found that individuals with more promiscuous attitudes and those who scored high on the anxiety sub-scale on an adult attachment style measure tend to groom their partners more frequently. These findings were also consistent with some of the functions of grooming: potential parental indicator, developing trust and courtship or flirtation. A recent empirical study by Seinenu Thein-Lemelson (

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...

) utilized an

ethological Ethology is a branch of zoology that studies the behavior, behaviour of non-human animals. It has its scientific roots in the work of Charles Darwin and of American and German ornithology, ornithologists of the late 19th and early 20th cen ...

approach to examine cross-cultural differences in human grooming as it pertains to caregiving behaviors. Naturalistic data was collected through video focal follows with children during routine activities and then coded for grooming behaviors. This cross-cultural comparison of urban families in Burma and the United States indicates that there are significant cross-cultural differences in rates of caregiver-to-child grooming. Burmese caregivers in the sample groomed children more often than caregivers in the United States. Additionally, children in the United States have short instances of concentrated grooming predominantly during daily activities that are structured explicitly around hygiene goals (bath time), in contrast to the Burmese child, whose grooming is distributed more evenly within and across daily activities. The Burmese parents maintained a constant vigilance with regard to risk of infection. The study is significant because it is the only study of human grooming to utilize naturalistic data.

Gallery

File:Cat cleaning itself.jpg, A domesticated

cat The cat (''Felis catus''), also referred to as the domestic cat or house cat, is a small domesticated carnivorous mammal. It is the only domesticated species of the family Felidae. Advances in archaeology and genetics have shown that the ...

grooming File:Burmese Kitten Grooming Itself.webm, A domesticated

grooming File:Cygnus atratus preening.jpg,

Black swan The black swan (''Cygnus atratus'') is a large Anatidae, waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is nomadic, with erratic migration patterns dependent ...

preening File:Preening.jpg,

Peregrine falcon The peregrine falcon (''Falco peregrinus''), also known simply as the peregrine, is a Cosmopolitan distribution, cosmopolitan bird of prey (raptor) in the family (biology), family Falconidae renowned for its speed. A large, Corvus (genus), cro ...

preening its feathers File:Passer domesticus bathing in water, Anas platyrhynchos in background.ogv, A

house sparrow The house sparrow (''Passer domesticus'') is a bird of the Old World sparrow, sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of and a mass of . Females and young birds are coloured pa ...

cleans itself in moving water while a

mallard The mallard () or wild duck (''Anas platyrhynchos'') is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. It has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Arge ...

preens in the background. File:Sarcophaga carnaria (Portugal2005).ogg, A

flesh fly Sarcophagidae () are a family (biology), family of fly, flies commonly known as flesh flies. They differ from most flies in that they are Ovoviviparity, ovoviviparous, opportunistically depositing hatched or hatching maggots instead of eggs on c ...

uses its legs to clean and maintain itself. File:Haltern - Naturwildpark Granat - Dama dama dama 10 (1) ies.webm, A

fallow deer Fallow deer is the common name for species of deer in the genus ''Dama'' of subfamily Cervinae. There are two living species, the European fallow deer (''Dama dama''), native to Europe and Anatolia, and the Persian fallow deer (''Dama mesopotamic ...

grooming herself File:Mute swan Preening in captivity.jpg,

Mute swan The mute swan (''Cygnus olor'') is a species of swan and a member of the waterfowl family Anatidae. It is native to much of Eurasia, and (as a rare winter visitor) the far north of Africa. It is an introduced species in North America, home to ...

preening

References

External links