Elephants sniff out danger
2007-10-19 10:32
London - Elephants can literally
smell danger, according to a study on Thursday that shows the
animals can sniff out whether humans are friends or foes.
The study in Kenya found elephants detected both the scents
and colours of garments worn by Masai tribesman who often come
into conflict with the animals when herding cattle.
When detecting the scent of a Masai, the elephants turned up
their trunks to orient themselves to the smell and then
stampeded away until they reached cover in the tall grass.
"The degree with which the elephants are able to classify
people hasn't been shown before in any animal," said Lucy Bates,
a cognitive psychologist at the University of St. Andrews, who
worked on the study published in Current Biology.
Working with the Amboseli Elephant Research Project in
southern Kenya, the researchers presented the animals with clean
clothing and material worn by either a Masai or Kamba tribesman.
They did not stampede when sniffing either clean clothes or
those worn by Kamba tribesmen, farmers who pose little threat to
the animals, Bates said.
"The reactions between the Masai and the Kamba were so
different," Bates said in a telephone interview. "They weren't
reacting as if it was the same predator."
To test their reactions further, the researchers presented
the elephants with red material, the same colour as the Masai's
traditional costume, and plain white clothing.
When the animals spied red, they stamped their feet and
shook their heads in an aggressive manner while the colour white
failed to spark such aggressive behaviour, Bates said.
"The reaction with the Masai clothes was very intense,"
Bates said.
The findings could boost conservation efforts in Kenya
focused on keeping people and pachyderms apart, Bates said.
The researchers suspect elephants across Africa are just as
perceptive. "Elephants would likely have the same ability to
make these discriminations across Africa but it would be for
different groups," Bates said.