One of the Cincinnati Zoo's most famous residents has died.
The zoo says an endangered Sumatran rhino that fathered the first Sumatran rhino calve born in captivity in more than a century died Monday.
The rhino named Ipuh had fathered three calves since 2001, the most ever in captivity.
The zoo estimates that Ipuh was at least 33-years-old and believes he was one of the oldest Sumatran rhinos on record.
Sumatran rhinos are seriously threatened by loss of habitat and poaching. Fewer than 200 live in Indonesia and Malaysia today.