Raccoon (image) Michigan State University Caption The raccoon, the most solitary of the three species in the Procyonid family studied by Michigan State University researchers, has the smallest frontal cortex. The study is one of the first to look at brain size and behavior in carnivores. Credit Michigan State University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.