A cage is an enclosure often made of

mesh A mesh is a barrier made of connected strands of metal, fiber, or other flexible or ductile materials. A mesh is similar to a web or a net in that it has many attached or woven strands. Types * A plastic mesh may be extruded, oriented, exp ...

, bars, or

wire Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample diameter 40 mm A wire is a flexible strand of metal. Wire is c ...

s, used to confine, contain or protect something or someone. A cage can serve many purposes, including keeping an animal or person in captivity, capturing an animal or person, and displaying an animal at a

zoo A zoo (short for zoological garden; also called an animal park or menagerie) is a facility in which animals are kept within enclosures for public exhibition and often bred for conservation purposes. The term ''zoological garden'' refers to zoo ...

Construction

Since a cage is usually intended to hold living beings, at least some part of its structure must be such as to allow for the entry of light and air. Thus some cages may be made with bars spaced too closely together for the intended captive to slip between them, or with windows covered by a mesh of some sort.

Animal cages

Cages are often used to confine animals, and some are specially designed to fit a certain species of animal. One or more

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

s, rodents, reptiles, and even larger animals of certain breeds are sometimes confined in a cage as

pets A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive appearances, intelligence ...

. Animal cages have been a part of human culture since ancient times. For example, an

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic p ...

vase A vase ( or ) is an open container. It can be made from a number of materials, such as ceramics, glass, non-rusting metals, such as aluminium, brass, bronze, or stainless steel. Even wood has been used to make vases, either by using tree species ...

dated to 490 B.C. depicts a boy holding a possibly domesticated rabbit on his lap, with a cage with an open door in the background. The biblical Book of Jeremiah refers to a tribe being like "cages full of birds", and the

Book of Ezekiel The Book of Ezekiel is the third of the Latter Prophets in the Tanakh and one of the major prophetic books, following Isaiah and Jeremiah. According to the book itself, it records six visions of the prophet Ezekiel, exiled in Babylon, during ...

describes the capture of a lion in which the captors "pulled him into a cage and brought him to the king of Babylon". The different laws governing the keeping of animals in captivity generally provide for the size of cages or minimum equipment, depending on the species, whether for transport or for breeding. Swiss legislation, for example, defines minimum absolute internal dimensions for pet cages, but the Swiss Animal Protection organization (PSA) states that even if these dimensions comply with the law, they are far from being in line with the needs of species. It is therefore necessary in practice to provide a much higher vital space to ensure the well-being of the occupants. Animal protection associations have often argued for improving transport conditions in cages and for bans on battery cages, especially for egg-laying hens. The European legislation is constantly changing, but consumer behavior also influences breeding conditions.

Trapping

Cages also serve as a trapping tool. This is a common and illegal purpose of the cage, as poaching is illegal itself. These type of cages are used to trap an animal, or hold them for a certain period of time. U.S. President

Theodore Roosevelt Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26t ...

used a cage himself to capture a bear, as the cage serves a purpose for capturing large animals. Glass cage smutzer ragunan.jpg,

Zoo A zoo (short for zoological garden; also called an animal park or menagerie) is a facility in which animals are kept within enclosures for public exhibition and often bred for conservation purposes. The term ''zoological garden'' refers to zoo ...

cage 1904 Flight Cage.JPG,

Aviary An aviary is a large enclosure for confining birds, although bats may also be considered for display. Unlike birdcages, aviaries allow birds a larger living space where they can fly; hence, aviaries are also sometimes known as flight cages. Avi ...

Fajardo El Conquistador birdcage.jpg, Decorative

aviary An aviary is a large enclosure for confining birds, although bats may also be considered for display. Unlike birdcages, aviaries allow birds a larger living space where they can fly; hence, aviaries are also sometimes known as flight cages. Avi ...

BustanHagalilBattery.JPG,

Battery cage Battery cages are a housing system used for various animal production methods, but primarily for egg-laying hens. The name arises from the arrangement of rows and columns of identical cages connected together, in a unit, as in an artillery batt ...

Jaula Roedores Ferplast.jpg,

Hamster Hamsters are rodents (order Rodentia) belonging to the subfamily Cricetinae, which contains 19 species classified in seven genera.Fox, Sue. 2006. ''Hamsters''. T.F.H. Publications Inc. They have become established as popular small pets. The ...

or mouse cage Rat cage 01.jpg, Rat cage Hasenstall039.JPG, Rabbit cage Caged marmoset.jpg, The hand of a

marmoset The marmosets (), also known as zaris or sagoin, are 22 New World monkey species of the genera '' Callithrix'', '' Cebuella'', '' Callibella'', and ''Mico''. All four genera are part of the biological family Callitrichidae. The term "marmoset" ...

caged at a

butterfly park Butterfly Park is a city park of about in Portland, Oregon, Portland, in the U.S. state of Oregon. Located at 7720 South Macadam Avenue, the park includes a natural area and walking paths near the Willamette River. The natural area provides impo ...

Ptáčník.JPG, Cage of bird

trapper Animal trapping, or simply trapping or gin, is the use of a device to remotely catch an animal. Animals may be trapped for a variety of purposes, including food, the fur trade, hunting, pest control, and wildlife management. History Neolithic ...

(late 19th century) File:Vogelkäfig 18-19 Jh.jpg,

Birdcage A birdcage (or bird cage) is a cage designed to house birds as pets. Antique (or antique-style) birdcages are often popular as collectors' items or as household decor but most are not suitable for housing live birds, being too small, improper ...

(18th / 19th century)

Human cages

Punishment

In history, prisoners were sometimes kept in a cage. During the

Vietnam War The Vietnam War (also known by other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam a ...

they were referred to as "tiger cages". Captives would sometimes be chained up inside into uncomfortable positions to intensify suffering. In medieval England, King Edward punished

Robert the Bruce Robert I (11 July 1274 – 7 June 1329), popularly known as Robert the Bruce (Scottish Gaelic: ''Raibeart an Bruis''), was King of Scots from 1306 to his death in 1329. One of the most renowned warriors of his generation, Robert eventual ...

in by having two of his female supporters encaged in public.

Safety

* Safety cage, in automobile safety **

Roll cage A roll cage is a specially engineered and constructed frame built in (or sometimes around, in which case it is known as an exo cage) the passenger compartment of a vehicle to protect its occupants from being injured or killed in an accident, pa ...

, a frame built in or around the cab of a vehicle *

Shark-proof cage Shark cage diving is underwater diving or snorkeling where the observer remains inside a protective cage designed to prevent sharks from making contact with the divers. Shark cage diving is used for scientific observation, underwater cinematograph ...

, used to protect divers

Entertainment

Cages are used in various forms of entertainment to create excitement from the sense that the entertainers are trapped in the cage. For example,

cage dancing Go-go dancers are dancers who are employed to entertain crowds at nightclubs or other venues where music is played. Go-go dancing originated in the early 1960s at the French bar Whisky a Gogo located in Juan-les-Pins. The bar's name was tak ...

"refers to a scantily-clad feminine dancer, perhaps wearing a mini-skirt or hot- pants, and (supposedly) trapped inside of a hanging bird cage".

Cage fighting Mixed martial arts (MMA), sometimes referred to as cage fighting, no holds barred (NHB), and ultimate fighting, and originally referred to as Vale Tudo is a full-contact combat sport based on striking, grappling and ground fighting, incorp ...

involves two combatants, usually engaging in

mixed martial arts Mixed martial arts (MMA), sometimes referred to as cage fighting, no holds barred (NHB), and ultimate fighting, and originally referred to as Vale Tudo is a full-contact combat sport based on striking, grappling and ground fighting, inc ...

, inside a cage-like structure, and "conjures up the image of two combatants trapped in a cage, trading vicious blows as the audience bays for blood". In Australia, a ban on the use of "cage-like enclosures" at such events was lifted in 2014. Steel cages are also one of the oldest form of enclosures used in

professional wrestling Professional wrestling is a form of theater that revolves around staged wrestling matches. The mock combat is performed in a ring similar to the kind used in boxing, and the dramatic aspects of pro wrestling may be performed both in the ring or ...

. The first "steel cage match" of any kind took place on June 25, 1937 in

Atlanta, Georgia Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,7 ...

. This match took place in a ring surrounded by

chicken wire Chicken wire, or poultry netting, is a mesh of wire commonly used to fence in fowl, such as chickens, in a run or coop. It is made of thin, flexible, galvanized steel wire with hexagonal gaps. Available in 1 inch (about 2.5 cm) diameter, ...

, in order to keep the athletes inside, and prevent any potential interference.

Homes

Engineering

* Rebar cages used in reinforced concrete * Cage (bearing) – a component of a rolling-element bearing *

Gabion A gabion (from Italian ''gabbione'' meaning "big cage"; from Italian ''gabbia'' and Latin ''cavea'' meaning "cage") is a cage, cylinder or box filled with rocks, concrete, or sometimes sand and soil for use in civil engineering, road buildin ...

– a cage filled with coarse gravel or rock for use in civil engineering, road building, military applications and landscaping *

Mine cage Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. Shallow shafts, typically sunk for civil engineering projects, differ greatly in execution method from ...

– similar to an elevator, for a shaft mine * Cage, a separated enclosure in a computer

colocation centre A colocation center (also spelled co-location, or colo) or "carrier hotel", is a type of data centre where equipment, space, and bandwidth are available for rental to retail customers. Colocation facilities provide space, power, cooling, and ...

* Faraday cage – an enclosure used to block electric fields

Other uses

Batting cage A batting cage (or tunnel) is an enclosed area for baseball or softball players to practice the skill of batting. The optimal material for batting cages is netting, and they are typically rectangular in shape. Chain-link fence is not required bu ...

– an enclosure for baseball batting practice *

Bottle cage A bottle cage is device used to affix a water bottle to a bicycle. Composed of plastic, aluminum, stainless steel, titanium or carbon fiber, it is attached to the main frame of a bicycle, the handlebars, behind the saddle, or, in uncommon cas ...

– a bicycle bottle holder *

Cage crinoline A crinoline is a stiff or structured petticoat designed to hold out a woman's skirt, popular at various times since the mid-19th century. Originally, crinoline described a stiff fabric made of horsehair ("crin") and cotton or linen which was ...

– a type of crinoline petticoat *

Cage trolley A cage is an enclosure often made of mesh, bars, or wires, used to confine, contain or protect something or someone. A cage can serve many purposes, including keeping an animal or person in captivity, capturing an animal or person, and displayin ...

- used for transporting goods * Fruit cage - used to protect fruit bushes from been eaten by birds File:Redon - Double baptismal font - 20090704.jpg, Cage protecting a baptismal font File:HK CWB Victoria Park Sport Court Locker Cages.JPG, Locker cages in Hong Kong Orana Wildlife Park feeding lions.jpg, Protection cage Sharks outside cage.jpg,

Shark Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachi ...

s around a

shark cage Shark cage diving is underwater diving or snorkeling where the observer remains inside a protective cage designed to prevent sharks from making contact with the divers. Shark cage diving is used for scientific observation, underwater cinematograph ...

being used for shark tourism Cage de Faraday.jpg, Faraday cage Funky Tucks Cage Dancer.jpg,

Go-go dancing Go-go dancers are dancers who are employed to entertain crowds at nightclubs or other venues where music is played. Go-go dancing originated in the early 1960s at the French bar Whisky a Gogo located in Juan-les-Pins. The bar's name was taken ...

cage File:Vann Garden- Soft fruit cages (geograph 5807382).jpg, Soft fruit cages

References

External links

* * {{Containers Containers Buildings and structures used to confine animals Metalworking Building materials Steel