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Three endangered Mexican gray wolves briefly escaped from their exhibit area at the zoo in Evansville, Ind., roaming the property before staffers rounded them up.
Mesker Park Zoo marketing director Abigail Adler said the one adult male and two nearly eight-month-old pups dug out of the enclosure Wednesday afternoon but never got off the zoo's property.
Adler told the Evansville Courier & Press that staffers knew where the wolves were at all times but that zoo visitors were moved into nearby buildings.
She says the pups were coaxed back into their barn with food, while the adult took about an hour to capture.
Adler says recent storms might have loosened up the ground inside the exhibit, allowing the animals to dig out. The enclosure's security will be checked before the wolves go back on exhibit.