An inexpensive Plexiglas metabolism cage for the squirrel monkey (Saimiri sciureus).

A light, sturdy, and inexpensive metabolism cage for use with the squirrel monkey (saimiri sciureus) is described. The design allows for efficient urine and feces separation, ease of maintenance, and little interference with individual and social behavior patterns. Standard laboratory procedures for reduction of sampling error are presented, as well as results of a pilot study using the described apparatus. The design of the cage is such that, with minor modifications, it can be utilized by other small primates.