CareerBuilders.com, Associated Press
This video grab provided by CareerBuilders.com, shows the executive chimpanzee advertisement that will air during Super Bowl XLVI Sunday, Feb. 5, 2012. Chicago's Lincoln Park Zoo says there's nothing funny about a commercial featuring suit-and-tie wearing chimpanzees scheduled to air Sunday during the Super Bowl. Dr. Steven Ross of the zoo says CareerBuilder.com's commercial that shows the chimps outsmarting a human co-worker actually poses a risk to chimpanzees because people lose sight of the fact they're an endangered species and less likely to try to save them.

CHICAGO — Chicago's Lincoln Park Zoo says there's nothing funny about a commercial featuring suit-and-tie wearing chimpanzees scheduled to air Sunday during the Super Bowl.

Dr. Steven Ross of the zoo says CareerBuilder.com's commercial showing chimps outsmarting a human co-worker actually poses a risk to chimpanzees because people lose sight of the fact they're an endangered species and become less likely to help save them.

Ross has made this pitch every year the company featured chimps in commercials but now he's hoping a recent Duke University study supporting his argument might help turn public opinion against the commercials.

The Chicago-based company only says the chimps in the commercial were treated humanely. The company also says the ads are effective.