Two lions stand guard outside the Art Institute of Chicago. This is the one on the north side of the building, or on the left if you are facing the front of the building.
In an effort to properly attribute scans that i have been publishing here is the information about the artwork and artist, Edward Kemeys, who created the original piece.
Lions (a pair), 1893
Bronze with green patina
261.7 x 114.2 x 287 cm (103 x 45 x 113 in.)
Gift of Mrs. Henry Field, 1893.1a-b
® The Art Institute of Chicago
Michigan Avenue entrance/steps
Scanned with 123d catch. post processing in netfabb, meshmixer, meshlab etc