Rock-loving orangutan causes $220K damage at St. Louis Zoo

ST. LOUIS -- A rock-loving orangutan named Rubih went ape on the observation windows of her St. Louis Zoo enclosure, forcing nearly $200,000 in repairs and the temporary closure of the exhibit.

Zookeepers said the 12-year-old female orangutan repeatedly tapped and banged rocks against four 7-foot-tall windows over several months, causing considerable damage.

The windows were replaced in mid-November, and the exhibit is expected to open later this month, the St. Louis Post-Dispatch reported.

Susan Gallagher, a spokeswoman for the zoo, said replacing the triple layer of glass with 3-inch-thick acrylic required re-engineering the frames that hold them, plus caulking requiring three weeks to cure.

Zoo officials said Rubih even dug up cement from the base of a tree for her destructive endeavors.

The zoo's ape-care team taught the orangutan to bring them rocks in exchange for treats. But the ape started banging on the windows with rocks when zookeepers weren't around, presumably to get someone's attention for a reward.

Zookeepers now hope to train Rubih to drop rocks in a tube -- regardless of whether staffers are around to reward her -- and give her a treat if they later find rocks when they check the tube.

With insurance coverage, the zoo ended up paying $71,000 out of pocket for the new windows.