The Economic Times

In 1969, NASA launched Bonnie the monkey for a planned 30 days in orbit; his condition deteriorated after about 8 days, and the mission was ended early

In 1969, a brave monkey named Bonnie embarked on a solo space voyage aboard Biosatellite III. Unfortunately, his mission was cut short due to health issues and dehydration. Tragically, Bonnie passed away from a heart attack shortly after being rescued from the ocean. This incident sparked significant ethical debates around animal testing in space, prompting NASA to implement new guidelines for the treatment of research animals.