>>Hip, Hip, Hippo-ray! Fiona photo bombs wedding proposal
The 9-month-old Fiona, who weighed 29 pounds when she was born six weeks premature, is the smallest hippopotamus ever to survive. Normal birth weight is between 50 and 110 pounds.
Credit: DaytonDailyNews
On Wednesday, the scale tipped 550 pounds for the baby hippo who measured 5 feet long and 2.5 feet tall, the zoo reported. Adult female hippos can weigh between 1,400 and 5,000 pounds.
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