Just
like humans, chimpanzees can create tools to
make their lives easier. For example, they’re
known for making tools out of leafy twigs and
stems to "fish" tasty termites out
of termite mounds. (Click
here to watch a short video of Gremlin fishing
for termites)
Termites are one of chimpanzees' favorite foods
– but how to reach the creatures deep
within their mounds presents quite a problem.
One day in 1960, Jane Goodall discovered how
chimpanzees solve the difficulty. A chimp named
David Greybeard picked up a twig and stripped
the leaves off of it. Then he stuck the twig
into one of the holes in the termite mound,
left it there for a moment, and slowly pulled
it out. As termites clung to the twig, David
picked them off with his lips and scrunched
them.
Jane's observation was the first report of
chimpanzees making and using tools in the wild.
It surprised the scientific world! Until then,
experts thought humans were the only animals
who could make tools. In fact, tool-making was
part of scientists' definition of "human.”
If tool-making was something only humans could
do, does this make chimps human? Jane’s
discovery opened a new debate about what it
really means to be a human being.
Later
scientists learned that chimpanzees use and
make other tools as well. Some chimps take a
stick to scrape out food, just like a person
might use a spoon to scoop out a tasty treat.
Other chimps have learned to use leaves to help
them drink. At Gombe, the chimpanzees sometimes
can't reach water that has formed in hollows
high up inside trees. So the chimps take a handful
of leaves, chew them, dip this “sponge”
into the little pool and suck out the water.
Today we know that chimpanzees make and use
tools differently in different places. For example,
chimps in some parts of Africa will crack nuts
with rocks, but the researchers have never seen
Gombe chimps doing this.
Did You Know?
A new study of the Gombe chimps shows that
young females and males learn to fish for termites
differently. Female chimps learn to fish termites
earlier and better than the young males. Females
also spend more time fishing while at the mounds
with their mothers -- males spend more time
playing. It all works out in the end. When they
are adults, females need more termite protein
because with young chimps to care for they can't
hunt the way males can. And the males, when
they play more, are practicing important skills
that they will need to compete with other males
as adults.
Try This
Have a conversation with your friends about
the ways in which human beings and animals are
the same and the ways in which they're different.
Do you think animals have the same emotions
as we do? Do they understand "good"
and "bad"? How do the animals you
know communicate? Do you think animals can plan
ahead?
Further Research
To learn more about chimpanzee communication,
click
here.
Check out the "Discovering Chimpanzees"
site, which includes an interactive video section.
Choose the behavior like "termite fishing,"
then watch a matching video clip from Gombe
National Park! Click
here.
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