Brown Hare (image) Penn State Share Print E-Mail Caption One of the adaptations seen in Pennsylvania hares is that some don't completely molt in winter, retaining a nearly all-brown coloration. That had not been documented in the East before this research. Credit Diefenbach Lab/Penn State Usage Restrictions non commercial use only Share Print E-Mail 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.