SAN DIEGO — Zoo officials say they don’t know why a hippopotamus calf born earlier this week died.
The baby hippo was found dead in its enclosure Thursday morning.
The baby was born five days earlier, and animal keepers said it kept so close to its mother, Funami, that they couldn’t get determine if it was male or female.
It was Funani’s fifth calf, the zoo said. She last gave birth in 2011. The father is named Otis.
Hippopotamuses are a threatened species, facing both natural predators and man-made dangers such as poaching, according to the zoo.