Earliest evidence of monkeys' use of stone tools found
Oldest non-human stone tools outside Africa found in Brazil
Chimps Use Tools to Excavate Underground Food, Study Says | Sci.News
Bonobo Apes Capable of Making Spears - and Using Them - Science & Health - Haaretz.com
Chimpanzee using stick as tool - Stock Image - Z912/0111 - Science Photo Library
How a Woman Changed the Definition of Man and Asked, 'What is Human?'
Chimpanzees more likely to share tools, teach skills when task is complex - The Source - Washington University in St. Louis
Chimpanzee - Intelligence, Tool Use, Social Behavior | Britannica
Monkeys can make stone tools too - YouTube
Chimps pack specialized tool kits, scientists say
Bonobos use a range of tools like stone-age humans | New Scientist
Monkeys Make Stone "Tools" That Bear a Striking Resemblance to Early Human Artifacts | Scientific American
Chimps Use Tools to Excavate Underground Food, Study Says | Sci.News
Chimp Intelligence Vs Humans
Researchers identify a variety of chimpanzee stone tools for cracking different nut species
The culture of tool use in primates - YouTube
Tools and primates: Opportunity, not necessity, is the mother of invention
Captive chimpanzees can figure out how to use tools to dig for food •
Chimpanzee Behavior Isn't Just Monkey Business. It's Culture. | Essay | Zócalo Public Square
Nutcrackers & Whistles: Animals That Use Tools
Tool Use Comes Naturally to Chimpanzees | Sci.News
