They can also predict the behavior of other individuals in the herd. Scientists say bonobos may have consciousness and a similar psyche to humans. It has also been proven that these monkeys can recognize themselves in a mirror. They are extremely intelligent, as evidenced by the fact that two captive bonobos, Kanzi and Panbanisha, have learned to write. The monkeys had acquired some 500 geometric symbols and, using a special keyboard, used them to answer questions asked by researchers. Kanzi’s vocabulary consists of more than 500 English words, and he understands about 3000 spoken English words.
Kanzi is also known for learning by watching people. In the 1990s, he learned to make and use simple stone tools.
