CINCINNATI, OH - JUNE 2: Flowers lay around a bronze statue of a gorilla and her baby outside the Cincinnati Zoo's Gorilla World exhibit days after a 3-year-old boy fell into the moat and officials were forced to kill Harambe, a 17-year-old Western lowland silverback gorilla June 2, 2016 in Cincinnati, Ohio. The exhibit is still closed as zoo officials work to upgrade safety features of the exhibit. (Photo by John Sommers II/Getty Images)

CINCINNATI, OH - JUNE 2:  Flowers lay around a bronze statue of a gorilla and her baby outside the Cincinnati Zoo's Gorilla World exhibit days after a 3-year-old boy fell into the moat and officials were forced to kill Harambe, a 17-year-old Western lowland silverback gorilla June 2, 2016 in Cincinnati, Ohio. The exhibit is still closed as zoo officials work to upgrade safety features of the exhibit.  (Photo by John Sommers II/Getty Images)