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Gorilla Breaks Glass Panel At San Diego Zoo: Reports

Denny, a 10-year-old gorilla, cracked one of three tempered glass layers during a possible charging display; no injuries were reported, zoo officials said.

  • On Saturday, Denny, a western lowland gorilla at the San Diego Zoo, broke one layer of a three-layer tempered glass panel while running at the barrier.
  • Dr. Erin Riley of San Diego State University suggested grief for a late brother and charging displays could have provoked the behavior, while western lowland gorillas declined by more than 60% due to poaching, disease, and deforestation.
  • Video footage of the enclosure shows Denny running at the glass while onlookers watched, and Katya Sutil, zoo visitor, said the impact jolted her back a few feet; an image shows a large crack in the glass.
  • San Diego Zoo officials said no staff or visitors were injured and Denny was unharmed, and the two gorillas will receive behind-the-scenes care until the panel replacement.
  • At the world-famous San Diego Zoo, the incident comes amid ongoing conservation work for gorillas, whose populations across several Central African countries remain hard to count due to remote forests.
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NBC San Diego broke the news in San Diego, United States on Sunday, October 12, 2025.
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