I mean, it ain't so big you couldn't kill it with a scattergun.
http://www.huffingtonpost.com/2012/01/06/giant-rat-found-bronx-new-york-foot-locker_n_1190141.html
http://www.huffingtonpost.com/2012/01/06/giant-rat-found-bronx-new-york-foot-locker_n_1190141.html