In the absence of adequate trees to live in these apes have taken to spending a good deal of their time in caves. It brings to mind the habits our own ancestors picked up when they left the jungle. But that's not the most amazing thing these creatures do.
That's right, spears. These chimps break off live branches a little over two feet long, strip off the leaves, and then sharpen the points with their teeth.
Then they jab them into the daytime nesting cavities of bushbabies, the small nocturnal primate on the right. Once they have killed the bushbaby, they pull it out for a nice protein rich snack.
That is so cool. I remember when I was a child how all the books said tool use separated us from the animals. Now you have "animals" doing something only humans are supposed to be capable of.
So it seems the females invented this trick to compete with the stronger males, and are now passing it on to their children. Even the young males are learning.
Think about it. In a few generations the entire group could be hunting this way. This could be the birth of a spear hunting culture. Imagine, if we can keep these marvelous animals from sliding int extinction, in a thousand years we could be watching them coax fire from stones.
In a million we could be hanging out together at the local library.
I know that may seem far fetched, but no other creature on this planet is as closely related to us as the chimpanzee. If we can keep them from going down that dark tunnel into extinction, there is really no telling what new wonders they will share with us.