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 displaying an animal at a zoo.
Spherical cage containing watermelons in Russia
A cage designed to contain small animals
Zoo cage
Aviary
A mouse is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse. Mice are also popular as pets. In some places, certain kinds of field mice are locally common. They are known to invade homes for food and shelter.
House mouse (Mus musculus)
Knockout mouse (left) and normal mouse (right)
Pet mice
"Pinkie" mice for sale as reptile feed