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When it comes to mirrors, elephants see the point
Published in Saudi Press Agency on 31 - 10 - 2006


Elephants can recognize
themselves in a mirror -- an important test of awareness that
puts them in an exclusive club with humans, chimpanzees and
dolphins, scientists reported on Tuesday, according to Reuters.
One elephant in a study at the Bronx Zoo in New York went
so far as to use the mirror to touch and explore a white "X"
that had been painted on her head, the researchers report in
this week's issue of the Proceedings of the National Academy of
Sciences.
"Maggie, Patty and Happy immediately went over to the
mirror when they were let out, which was really a surprise to
us because most animals, when exposed to a mirror, act
immediately as if it were another animal," said Josh Plotnik, a
graduate student at Emory University in Atlanta who worked on
the study.
Elephants would be expected to be a bit stand-offish at
first, he said.
The researchers set up a cumbersome experiment at the Bronx
Zoo, spending weeks to install a pachyderm-proof covered mirror
in the pen of the three female Asian elephants.
"They would go over smell it and then leave," Plotnik said
in a telephone interview.
But when the mirror was opened, the three elephants noticed
right away.
"The three of them went straight to the mirror and
immediately were touching and smelling it," Plotnik said.
"I was really surprised that there was no audible
vocalization," he said. "These elephants are extremely vocal.
They went straight for it -- there was a lot of smelling the
very first day. Both Maxine and Patty tried to climb the mirror
wall and look over it."
Before the elephant study, humans, chimpanzees and dolphins
were believed to be the only creatures capable of recognizing
themselves in a mirror. Anyone who has seen a kitten jump at
its reflection or a caged bird peck at a mirror knows there is
a difference between looking at a mirror and recognizing one's
self in it.
One elephant in the Bronx Zoo study moved her head in and
out of the mirror's reflection. "Then we saw self-directed
behavior, which is what humans do in front of the mirror --
picking our teeth, picking our noses or whatever," Plotnik
said.
"Maxine grabbed her left ear and pulled it slowly forward.
All three put their trunks in their mouths, as if they were
exploring."
But the big test came when they painted a white mark on
each of the elephant's heads. To ensure that the elephants were
seeing the mark, and not just checking to see what had been
done to them, a "sham" mark using a similar but invisible
compound was painted on the other side.
"Happy never touched the sham mark and she touched the
other mark repeatedly in front of the mirror," Plotnik said.
The other two did not but the researchers were not
surprised.
"Chimpanzees and humans groom by taking things off their
bodies. Elephants don't do that at all," Plotnik said. "It is
possible the other two saw this white mark on their heads and
thought it inconsequential."
The researchers hope other animal experts will try to
replicate their findings with animals and other species.


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