Ai, Pioneering Chimpanzee Who Mastered Numbers and Art, Dies at 49

Ai, a chimpanzee whose remarkable intelligence helped scientists understand primate minds, has died at age 49. Researchers at Kyoto University's Primate Research Institute studied her for over four decades. Ai demonstrated an unprecedented ability to recognize numbers, understand symbols, and even create paintings. She arrived at the institute in 1977. Her cognitive skills became the focus of long-term research. Ai learned to count, order numbers correctly, and identify colors using a computer and touchscreen. Her achievements provided crucial evidence that great apes possess complex memory and learning abilities. This work reshaped how science views animal intelligence. Ai also expressed herself through art. She became known for her colorful abstract paintings. Her legacy continues through ongoing research at the institute. Scientists there still study her descendants and other chimpanzees.