CINCINNATI -- Henry, the Cincinnati Zoo's adult male hippopotamus and father to Fiona, is fighting an infection.
The zoo said staff discovered the infection from blood tests. Caretakers are trying to fight it with antibiotics, but it's not easy giving medicine to a 3,500-pound animal with thick skin.
Henry hadn't been feeling well back in August, though he seemed to bounce back a bit.
He spent Saturday outside with Fiona and Bibi, Fiona's mother. Vets will do a followup exam in a few weeks to see if the treatment has been effective.
Henry, 36, came to Cincinnati from Dickerson Park Zoo in Springfield, Missouri.