This is an archived article that was published on sltrib.com in 2008, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Posted: 10:12 PM- A 43-year-old Hogle Zoo gorilla will undergo surgery Wednesday morning for cancer - and zoo officials say it's possible that, if the cancer is too widespread, they may have to euthanize the elderly ape.

The African-born Muke came to Hogle in 1996 from the St. Louis Zoo. She has been paired with a male silverback, Tino, for most of the years since.

"They've never mated, but they're bonded," said zoo spokeswoman Holly Braithwaite. "He's been pacing around looking for her - he's acting concerned."