U.S. zoologistssaid last week that latest study using mirrors shows that elephants are self-aware--atrait previously proved only in primates and dolphins.
Elephants may never forget, but can they recognize themselves in the mirror? New research says yes.
Researchers in Congo last year were the first to notice gorillas using tools. The great apes were seen opening nuts with rocks and gauging water depths with sticks.
Flipper? Try Hunter. Scientists have seen bottle-nose dolphins , thought to be the smartest marine animals, using sea sponges as fishing tools.