There are potential advantages of housing primates in mixed species exhibits for both the visiting public and the primates themselves. If the primates naturally associate in the wild, it may be more ...

The authors provided different forms of environmental enrichment to six old laboratory male tufted capuchin monkeys (Cebus apella) and studied the behavior of the monkeys during a baseline period and ...

Intraperitoneal injections of blood substances from schizophrenic or stressed normal human donors into primates trained to perform a precision timing task resulted in significant prolongation of time ...