Field Frame Friday: This is my ‘Don’t mess with me’ face

This lone male clearly wants to range alone as he is trying to scare us off by displaying aggressive behaviors. Aggression in macaques, and in this example long-tailed macaques (Macaca fascicularis), can be identified via the intense direct stare, raised eyebrows and round “open threat face”. 

[Photo and caption by Josephine Hubbard]


Van Hooff, J. A. R. A. M. (1967). The Facial Displays of the Catarrhine Monkeys and Apes. In D. Morris (Ed.), Primate ethology (pp. 7-68). New Brunswick, NJ, US: AldineTransaction.

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