Yamanashi, Y., Nogami, E. Teramoto, M. et al. 2018. Adult-adult social play in captive chimpanzees: Is it indicative of positive animal welfare? Applied Animal Behaviour Science 199, 75-83.
Play is sometimes considered as an indicator of positive animal welfare. However, it is not yet sufficiently understood whether or not social play among adults can be considered as such an indicator because it is...