A cage for arboreal animals includes two compartments, each having a hinged, latched, door. The two compartments are separated by a sliding panel to enable maintenance to be performed easily and safely, minimizing unwanted contact between hazardous animals, such as venomous snakes, for example, and the investigators or maintenance personnel. The structure is further ventilated to provide air flow from bottom to top, and could maintain a humidity level in accordance with needs of caged animals. The sides of the cage are transparent to permit simple monitoring of the reptiles as well as to meet the social needs of those animals which need visual contact with other animals in adjacent cages. This cage meets or exceeds all current Federal principles and regulations for animal housing units.