Here is more evidence:

Elephants can recognize themselves in a mirror and use their reflections to explore hidden parts of themselves, a measure of subjective self-awareness that until now has been shown definitively only in humans and apes, researchers reported yesterday.

The findings confirm a long-standing suspicion among scientists that elephants, with their big brains, complex societies and reputation for helping ill herdmates, have a sufficiently developed sense of identity to pass the challenging "mirror self-recognition test."

[Note: As those who know me can attest, I have a fondness for elephants wholly apart from (indeed, often in spite of) their association with certain political agendas.]