The Cleveland Metroparks Zoo says the male hippo was euthanized Monday due to "advanced age-related ailments." The zoo says the hippo was named Blackie and was about 59 years old.
A zoo announcement says Blackie sired three male offspring after arriving at the zoo from Africa in 1955. Blackie was born in a game sanctuary in Tanzania.
The zoo says hippos typically live 30 to 40 years in the wild and can live longer in captivity.
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