Categorization of natural stimuli by captive chimpanzees using a same-different task. Social behavior is related to single housing experience in adult male macaques. Patterns in the use of large play structures in a group of juvenile bonnet macaques. Categorization of natural stimuli by captive chimpanzees using a same-different task . Categorization of natural stimuli by captive chimpanzees using a same-different task .
Creativity is a necessary component of effective environmental enrichment .
Designation of gender affects attitudes toward animals used in biomedical research . Designation of gender affects attitudes toward animals used in biomedical research . The influence of novelty on play structure use by a social group of bonnet macaques . Alternative techniques for environmental enrichment of captive macaques . Social behavior is related to single housing experience in adult male macaques.