Capuchin monkey research shows use of tools is widespread in the animal kingdom - UGA Today
Tools and primates: Opportunity, not necessity, is the mother of invention
Some Monkeys Entered The Stone Age More Than 3,000 Years Ago - GAP Project
Insights from orangutans into the evolution of tool use
Why Chimpanzees Have Not Entered The Stone Age
Oldest non-human stone tools outside Africa found in Brazil
Tool use by non-humans - Wikipedia
Monkeys – Not Humans – Made Ancient Sets of Stone Tools in Brazil, Study Finds : ScienceAlert
Monkeys making stone flakes provoke questions about early humans : Shots - Health News : NPR
New study shows use of tools supports learning in nonhuman species - UGA Today
Oldest non-human stone tools outside Africa found in Brazil
Monkeys Provide Clues to How Tool Use Developed - The New York Times
Monkeys have used stone tools for hundreds of years - YouTube
New study on monkeys using stone tools raises questions about evolution | The Hill
Chimpanzee Behavior Isn't Just Monkey Business. It's Culture. | Essay | Zócalo Public Square
New study on monkeys using stone tools raises questions about evolution | The Hill
Chimpanzees hunting for honey are cleverer than we thought
Monkeys Make Stone "Tools" That Bear a Striking Resemblance to Early Human Artifacts - Scientific American
Oldest non-human stone tools outside Africa found in Brazil
Capuchin monkeys have been using stone tools for around 3,000 years
Monkeys smashing nuts with stones hint at how human tool use evolved
The Incredible Range of Chimpanzee Behavior - JSTOR Daily
Monkey using tool hi-res stock photography and images - Alamy
Monkey tool design changed over millennia
Some monkeys reuse their stone tools but others just chuck them away | New Scientist
