cage

A cage is a structure designed to confine animals or birds, typically made of metal bars or mesh but also available in wood or plastic for smaller enclosures. Cages are used to house pets such as birds and small mammals, as well as for transporting animals, containment in farming or research settings, and wildlife rescue or rehabilitation.

Common types include small animal cages for hamsters, gerbils, or guinea pigs; bird cages with vertical bars and perches; and larger aviaries that provide more space while still keeping occupants contained. Materials range from steel or aluminum wire to coated finishes, with flooring options that include wire mesh, plastic trays, or solid bases. Features often include locking doors, removable pans, perches, and enrichment elements to support welfare.

Welfare considerations emphasize adequate size and ventilation, regular cleaning, safe construction, and enrichment to promote natural behaviors. Cages should minimize injury risks, avoid sharp edges or toxic coatings, and be matched to the animal’s needs. Regulations and guidelines in various jurisdictions address housing standards, emergency escape precautions, and humane handling.

In culture and names, Cage is a surname and appears in reference to individuals, most notably the American actor Nicolas Cage, who adopted his stage name inspired by the Marvel character Luke Cage and the composer John Cage.