Misanthropic Scott says:

It’s called failing the mirror test. Apes pass. Dolphins pass. Cotton Topped Tamarins actually passed when they were tested appropriately for that species, which involved an excessive amount of temporary hair dye rather than the usual small red spot on the forehead. It’s often seen as a recognition of a sense of self by many psychologists. Clearly this baboon is having a bit of trouble and thought that the reflection was another baboon of equal strength, thus making him/her expect a fight. I wonder if s/he will learn given time. (Actually, by the elongated nose but non-muscular build, he’s probably an adolescent male, just a guess.)

SJP says:

What? Red dot Indians are call Cotton Topped Tamarins now? I’m always behind.

Improbus says:

I feel the same way when I look in the mirror in the morning.