How to Tickle a Lab Rat (and Why You’d Want To)

Rats, apparently, love to be tickled. Well, lab rats, anyway. And you can even get a certificate in the art of proper rat tickling from Purdue University. Brianna Gaskill helped create that program while a professor at Purdue. She’s recently gone to work as an animal welfare specialist at the drug company Novartis. (Segment Produced by Lynsey Mella and Martha Harris)