This dataset contains ~4000 photos of rhesus macaque faces. There are 81 individual rhesus macaques from two different colonies (A and B). There are also two spreadsheets containing information about the individual animals and the images. For the monkeys from colony A the photos are arranged by identity in a zipped file (for example Arlene.zip contains all the images of Arlene). For colony B all the images are in a single zip file (Threat Neutral Faces Pairs). The images spreadsheet contains information about which zip file each image file is stored in.