"de Waal ... was a member of the National Academy of Sciences and the Royal Netherlands Academy of Arts and Sciences... In 2012, he won an Ig Nobel Prize for a paper he coauthored showing that chimpanzees could match familiar individuals’ faces with their posteriors, suggesting that they had mental representations of their group mates. Consistent with his ability to embrace the humor in everything, Frans loved receiving an Ig Nobel." https://www.science.org/doi/10.1126/science.adp4966
