Dolphins, like humans and chimps, recognize themselves in mirrors:

Dolphins and Mirrors

This is especially wierd because humans and chimps rely heavily on sight, while dolphins mostly use sound (echolocation, like bats) to navigate and to identify each other.

-- Anonymous, May 01, 2001

Answers

I think the clue may be in the article's mention of the touch/feel part of their cognition.

-- Anonymous, May 01, 2001