The Zoo humanely euthanized Rosie on Thursday due to a large abdominal mass that was inoperable, in part due to her advanced age.
Female Western Lowland gorillas such as Rosie typically have a normal lifespan of 38 years in captivity.
The North Carolina Zoo now has seven gorillas in its troop: silverback Mosuba, females Jamani and Olympia, adolescent male Hadari, and juvenile males Apollo, Bomassa, and Dembe.
Read more from the NC Zoo's website here.