When a snake bit Lolo, one of 62 chimpanzees Humane Society International cares for in Liberia, sanctuary director and veterinarian Richard Ssuna gave him antibiotics and pain medicine hidden in rice balls. Lolo lives on one of six mangrove islands where animals were retired from research starting in the early 2000s. When caregivers bring food by boat, they disembark and wade closer to shore. To protect both the animals’ and humans’ well-being, they don’t come into direct contact with the chimps.