Litchfield Carnegie Public Library director Sara Zumwalt said the library obtained Stacks the cat about a year ago to address the growing rodent population inside the library and the mice quickly disappeared, the Springfield (Ill.) State Journal-Register reported Friday.
"We haven't had a mouse problem since she came," Zumwalt said of the 2-year-old feline.
The director said a Cat Fancy magazine writer told her Stacks is due to be listed as No. 13 in its February 2010 article on "45 Amazing Library Cats." Zumwalt said she does not know the system used by the magazine to rank the felines.
Zumwalt said Stacks is friendly toward library patrons and can often be found curled up on the laps of visitors using one of the facility's public-access computers.