In controlled experiments, Kanzi responded correctly to imaginary scenarios about 68% of the time, impressing researchers with his symbolic reasoning and imagination.
The findings challenge the long-held belief that imagination and make-believe are uniquely human, suggesting these cognitive skills may have deeper evolutionary roots shared with other great primates.
Researchers caution that results are based on a single bonobo and may be influenced by prior training, but the study opens new avenues for understanding animal cognition and the evolution of the human mind.
What does Kanzi's make-believe play reveal about the minds of our ancient ancestors?
Was Kanzi truly imagining, or was he just expertly playing a game with humans?
Could the brain mechanisms for imagination be widespread across the animal kingdom?
What 'human' trait will science next discover in animals?
Since Kanzi died last year, how will researchers continue this groundbreaking study?
If imagination isn't uniquely human, should intelligent apes be granted personhood rights?
Kanzi the Bonobo’s Pretend Play: First Experimental Evidence of Ape Imagination and Its Evolutionary Impact
Overview
In 2024, Dr. Bastos and Dr. Krupenye conducted innovative tea-party experiments with Kanzi, a bonobo raised in a human-like environment and skilled in lexigrams. Kanzi demonstrated the ability to hold both real and imagined states simultaneously, revealing genuine pretend play. This groundbreaking finding was published in early 2026, challenging the long-held belief that imagination is uniquely human and suggesting that this capacity dates back millions of years to our common ancestor with great apes. While Kanzi's unique upbringing enabled these abilities, it also raises questions about how widespread such imagination is among other apes. The study has sparked urgent calls for further research and stronger conservation efforts to protect these cognitively complex relatives.