The reduction of abnormal behaviors in individually housed rhesus monkeys (Macaca mulatta) with a foraging/grooming board (1991)

Bayne, K., Mainzer, H., Dexter, S. L. et al.

Abstract

All of the single-housed animals foraged from the board to the point that a significant reduction in the level of abnormal behavior [5%] was noted. Most animals also groomed the fleece covering the board. Subjects spent on average 12 minutes foraging from the board per 30 minute-observation sessions. Prior to enrichment, individuals spent on average 25% of their time engrossed in abnormal behaviors.