Monkeys Make Stone "Tools" That Bear a Striking Resemblance to Early Human Artifacts | Scientific American
Bonobos use a range of tools like stone-age humans | New Scientist
Monkey stone tools in Brazil pre-date discovery of Americas | New Scientist
Tool use for corpse cleaning in chimpanzees | Scientific Reports
Common Chimpanzee Stock Photo - Download Image Now - Work Tool, Chimpanzee, Ape - iStock
Wild chimpanzee mothers teach young to use tools, video study confirms - The Source - Washington University in St. Louis
Chimpanzee guide: where they live, what they eat, and how they use tools and weapons - Discover Wildlife
Tool use by non-humans - Wikipedia
Chimpanzees can learn how to use tools without observing others - University of Birmingham
The culture of tool use in primates - YouTube
Captive chimpanzees can figure out how to use tools to dig for food •
Spear-Hunting Chimps - Animal Cognition
Chimps Use Tools to Excavate Underground Food, Study Says | Sci.News
Chimps Shine Light on Mystery of How the First Humans Used Tools to Dig for Food
Why Chimpanzees Have Not Entered The Stone Age
Chimpanzees Are Intelligent Enough To Use Tools Without Getting Help From Others
Oldest non-human stone tools outside Africa found in Brazil
Monkeys have used stone tools for hundreds of years - YouTube
6 Remarkable Ways Chimpanzees Use Tools
Nutcrackers & Whistles: Animals That Use Tools
Great apes can make and use tools, Israeli study shows | The Times of Israel
The Incredible Range of Chimpanzee Behavior - JSTOR Daily
Chimpanzee using stick as tool - Stock Image - Z912/0111 - Science Photo Library
Evolution
