DES MOINES, Iowa (AP) — A popular, elderly sea lion known has died at the Blank Park Zoo in Des Moines.

The Des Moines Register reports that Pupper died Thursday. She was 29.

Preliminary results of a necropsy show she suffered a chronic health condition. The zoo says in a statement that Pupper received care related to her age, but did not display any symptoms of pain.

Born at the zoo in 1989, Pupper exceeded the median life expectancy for sea lions in human care by six years. She was the oldest sea lion in the zoo's Hub Harbor Seal and Sea Lion Pool.

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Information from: The Des Moines Register, http://www.desmoinesregister.com