My alma-mater's unofficial mascot is the Black Squirrel.
Story goes, a guy from the university seeking to run wild-life tests on black squirrels and the environment, went into Canada and brought back 10 of the black squirrels to Kent State, here in Ohio.
Long story short, they've taken over and exerted their dominance among the indigenous squirrels. They're all over my part of Ohio now.
We even have an
Annual Black Squirrel Festival for them...it's kind of weird. The part of Wiki about the black squirrels driving out the native squirrels in Kent, is no joke. All the students who go there can tell you stories of the wars between the black and underground rebel grey squirrels.