Animals That Can Think

Me in the Mirror
Kanzi checks out his reflection. Along with apes, elephants and dolphins can also pass the "mirror test": all three species respond appropriately when they look in a mirror after a spot of paint has been applied to their forehead or another part of their body. Apes and elephants will reach up to touch the mark on themselves with their finger or trunk rather than reach out to touch the reflection. Dolphins will position themselves so they can see the reflection of the mark better.

• Inside the Minds of Animals