Scientists Study Gorilla Who Uses Tools:
It had been thought that the premeditated use of stones and sticks to accomplish a task like cracking nuts was restricted to humans and the smaller, more agile chimpanzees. Then in late September, keepers at a Dian Fossey Gorilla Fund International sanctuary in this eastern Congo city saw 2 1/2-year-old female gorilla Itebero smashing palm nuts between rocks in the ‘hammer and anvil’ technique, considered among the most complex tool use behaviors.