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Ai, Japanese Chimpanzee Who Counted and Painted Dies at 49

Ai contributed to groundbreaking research on primate intelligence and cognition, with over 40 years of studies influencing understanding of human mind evolution, Kyoto University said.

  • Ai, a chimpanzee who could count, identify colors and draw, passed away at 49 from multiple organ failure at Kyoto University.
  • Ai mastered the alphabet, Chinese characters, numbers 0-9, and 11 colors, aiding primate intelligence studies published in Nature.
  • Ai's son Ayumu also displayed remarkable abilities, contributing to research on knowledge transfer between chimp parents and offspring.
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Japanese researchers have announced the sad news that Ai, a chimpanzee who recognized more than a hundred Chinese characters and letters of the Latin alphabet, has died at the age of 49. Her extraordinary abilities earned her the label of a genius.

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Its name meant "love." It was captured in Guinea at one year and lived in a Kyoto research center with a computer, sheets, colors and instruments.

·Turin, Italy
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A research institute in Japan has confirmed that "Ai," the famous female chimpanzee from the primate brain research project and a symbol of primate thought and memory studies, has died of old age at 49.

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The famous chimpanzee Ai, renowned for her intelligence, has died in captivity in Japan.

·Stockholm, Sweden
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He died on Friday from a multi-organ failure and old age-related ailments.

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His cognitive abilities had made this primate the subject of many scientific articles and had earned him the nickname of "genius" in the mainstream media.

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読売新聞オンライン broke the news in Japan on Sunday, January 11, 2026.
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