The World's Most Famous Chimpanzee Has Died: Known for His Number Processing and Color Differentiation Skills

The world's most famous chimpanzee, Ai, known for his cognitive abilities, has passed away in Japan. This was reported by the BBC, referencing the institute at Kyoto University where the animal lived. He died at the age of 49, with old age and organ failure cited as the cause of death.

Scientists discovered that Ai could process numbers and differentiate colors. When he was just one and a half years old, researchers connected him to a special keyboard linked to a computer to study his memory and learning capabilities.