SAN DIEGO (KGTV) -- A gorilla at the San Diego Zoo sprinted towards the viewing glass and cracked one layer of the three layers of tempered glass surrounding the Gorilla habitat Saturday afternoon.

A seemingly excited western lowland gorilla was striking a viewing window in his enclosure so hard the protective glass cracked. Video from the San Diego Zoo shows visitors getting a scare Saturday ...

The 10-year-old gorilla left a large crack in the first of three layers of tempered glass that separates him from visitors at the San Diego Zoo Escher Walcott is a Writer/Reporter at PEOPLE, covering ...