The mark consists of The words Brookfield Zoo are in all capital letters set in sunset orange. The word Chicago is directly below the word Brookfield also in all capital letters set in lagoon blue. To the left of the words there is a sunset orange circle that features the side profile of a lion facing right. This image of a lion is set in white.
The color(s) sunset orange, lagoon blue, and white. is/are claimed as a feature of the mark.