When keepers noticed Winston, the Safari Park’s silverback gorilla leader, appeared a bit lethargic and was not eating or drinking for the second time in six months, they were concerned. Since these symptoms can be associated with heart problems—and cardiovascular disease is the most common cause of death for great apes in zoos—Winston was taken to the Paul Harter Veterinary Medical Center for an in-depth exam. A remarkable group was gathered, including two human cardiologists, both human and veterinary anesthesiologists, two veterinary cardiologists, and an expert support team. They performed an electrocardiogram and echocardiogram, conducted a radiology scan of Winston’s kidneys and liver, took multiple radiographs, and gave the big guy a dental exam. The results showed that overall, Winston was a pretty healthy guy, although there were some indications that his heart wasn’t functioning completely normally.

The data on Winston’s heart was shared with the Great Ape Heart Project, a group of subject matter experts working on understanding and treating cardiac disease in apes. With their recommendations, the Safari Park team was able to add to Winston’s care, and he was back to his usual routine once again.