Lab Mice (IMAGE) Purdue University Caption Lab mice, given the proper materials, can build nests as elaborate as their wild counterparts. This is a behavior that Purdue researcher Joseph Garner, from left, and graduate student Brianna Gaskill said relieves stress for the animals. Credit Purdue Agricultural Communications Service photo/Tom Campbell Usage Restrictions None License Licensed content 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.