Oscar Jonesy, a critically endangered Western lowland gorilla, died at the San Francisco Zoo on February 6, 2025, following a medical procedure that had initially gone well. At the age of 43, he was the third-oldest male of his species residing in a U. S. zoo, where the average lifespan ranges from 30 to 40 years. Zoo CEO Tanya Peterson expressed deep sorrow over his loss, emphasizing Oscar's role as a cherished ambassador for his critically endangered species among both staff and visitors.

The gorilla's surgery was deemed successful, but he unexpectedly became unresponsive during recovery, with no serious signs of illness noted prior to the procedure. The exact cause of death remains unclear, as the zoo has not disclosed the nature of the medical intervention. His death leaves three female gorillas—Bawang, Monifa, and Kimani—highlighting the ongoing challenges faced in the conservation of Western lowland gorillas. Oscar's life and legacy serve as a reminder of the vital need for continued efforts in wildlife preservation. The San Francisco Zoo's "Jones Family Gorilla Preserve" aims to provide a suitable habitat for these endangered animals, reinforcing the importance of conservation initiatives.