Terrarium is an artificial safe house for small terrestrial animals, particularly insects. The terrarium is a kind of box or chamber that is covered from top with a mesh to allow air circulation and walls of transparent material sheets. The walls may be made of opaque sheets having windows of transparent material to facilitate view through sides.
Ideally the terrarium is provided with small plants (especially those would provide host to the collected insects) for facilitating in-situ oxygen and fresh air generation, and water so that basic feed requirements of kept insects could be supported. Alternatively, natural food material can also be supplied timely. Small animals, particularly insects are collected from the local environment following the safe techniques and devices (e. g. butterfly net or pooter) and are released in the terrarium where they are free to fly, feed and rest. Terrarium is a good mean to observe the bodies and behavior of small animals like insects, keeping them comfortably till convenient time before releasing them back into the open.
Size of the terrarium can be determined as per the choice of keeper, keeping in mind the facilities required for captivated species.