The behavioralists, primatologists, and psych majors in the audience (hey, it's possible... intellectuals like fart jokes too ya know) should find this summary of a new primate study of interest:

Whether or not an animal can recognize itself in the mirror has long been used by scientists as a means of self-awareness. Apes pass the test, but monkeys have been thought to perceive a stranger in their reflection. The results of a new study suggest that what monkeys see is not so simple: although they don't recognize themselves, they also treat their mirror twins differently than they do real animals.

Is it just me, or does the first sentence of the article make no sense? Cor, look at me getting all "grammar police" and stuff...