Abstract: The terrarium includes at least one glass sidewall serving as a viewing window, and a chassis formed of rigid plastic providing a bottom wall and a rear side wall. In one embodiment, the chassis includes a bottom channel formed in the bottom wall of the chassis, for mounting the glass viewing wall. In another embodiment, the glass wall is mounted to the chassis by a plastic frame member bonded to the plastic sidewalls of the chassis. The terrarium also includes a top screened closure member. In one embodiment, a channel for the closure member is formed in the upper portions of the sidewalls of the chassis, and in another embodiment, a channel for the closure member is provided by opposing F-shaped molding members fitted over opposing glass sidewalls of the terrarium.