Campus critters are nuts for Penn State's 'Squirrel Girl'

Penn State students know her as the Squirrel Whisperer, or even Squirrel Girl. Which suits Mary Krupa just fine.

Four years ago, the 22-year-old senior became an internet sensation for placing tiny hats on the ubiquitous rodents that live near Penn State's landmark Old Main building, and coaxing them to hold miniature props.

Though her Penn State career is winding down, Krupa is still up to her old tricks. Her photos of "Sneezy the Penn State Squirrel" continue to garner thousands of likes on Facebook and have been featured in magazines and calendars.