Mae Mali, a female hippopotamus, celebrates her 60th birthday at Khao Kheow Open Zoo in Chonburi province, Thailand on Sept. 8, 2025. Mae Mali received a special "cake" made of fruit, vegetable and grass in celebration of her birthday. (Photo by Rachen Sageamsak/Xinhua)

Mae Mali, a female hippopotamus, celebrates her 60th birthday at Khao Kheow Open Zoo in Chonburi province, Thailand on Sept. 8, 2025. Mae Mali received a special "cake" made of fruit, vegetable and grass in celebration of her birthday. (Photo by Rachen Sageamsak/Xinhua)

Mae Mali, a female hippopotamus, celebrates her 60th birthday at Khao Kheow Open Zoo in Chonburi province, Thailand on Sept. 8, 2025. Mae Mali received a special "cake" made of fruit, vegetable and grass in celebration of her birthday. (Photo by Rachen Sageamsak/Xinhua)

Mae Mali, a female hippopotamus, celebrates her 60th birthday at Khao Kheow Open Zoo in Chonburi province, Thailand on Sept. 8, 2025. Mae Mali received a special "cake" made of fruit, vegetable and grass in celebration of her birthday. (Photo by Rachen Sageamsak/Xinhua)

Mae Mali, a female hippopotamus, celebrates her 60th birthday at Khao Kheow Open Zoo in Chonburi province, Thailand on Sept. 8, 2025. Mae Mali received a special "cake" made of fruit, vegetable and grass in celebration of her birthday. (Photo by Rachen Sageamsak/Xinhua)