FILE - In this Nov. 6, 2008, file photo, a squirrel runs 

FILE - In this Nov. 6, 2008, file photo, a squirrel runs onto the field during an NFL football game between the Denver Broncos and Cleveland Browns in Cleveland. (AP Photo/Mark Duncan, File)
Associated Press
FILE - In this Nov. 6, 2008, file photo, a squirrel runs onto the field during an NFL football game between the Denver Broncos and Cleveland Browns in Cleveland. (AP Photo/Mark Duncan, File)
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