Some animals are able to produce tools and use them to solve specific problems. These include dwarf and normal chimpanzee and "intellectual" leader of the world of birds — the New Caledonian crows. Many skills animal previously considered unique human abilities, but with the new studies list only "people" skills steadily decreasing.
Shinya Yamamoto (Shinya Yamamoto) at Kyoto University (Japan) and his colleagues have observed how different chimps used the same "tool" — plastic straw — to dry the glass with juice that has been inserted into the walls of their cells.
As the researchers initially monkey used two strategies. Part of the primates did not act optimally, dipping a straw into the juice and licking it, while the other chimps have learned to suck the liquid through a "tool." The scientists decided to check the primates of these groups react to the emergence of "rival" with another juice extraction technique in the next cell.
It was found that the chimpanzee, poppy straw in juice, drew attention to the fact that their neighbors much faster they coped with the task and get new portions of food. After a while all the monkeys in the group "adopted" skill of their neighbors, and learned to suck nectar through a plastic tube.
"When chimpanzees are dissatisfied with their own technique of" tools ", they can learn more advanced techniques of application, by watching the more dexterous or skillful neighbor. Our study shows that the gradual cultural evolution is possible, not only among people, but also some other animals" — the researchers conclude.