(AP) — If a dog that sniffs out pregnant polar bears is correct, the Kansas City Zoo isn’t getting a new addition to its exhibit.

A beagle in Shawnee, Kan., can tell whether a bear is pregnant by sniffing her waste. But the dog, named Elvis, didn’t detect a pregnancy for Kansas City’s female bear, Berlin.

The Kansas City Zoo was among more than a dozen to submit a stool sample as part of a study being conducted by the Cincinnati zoo. The Cincinnati zoo’s Center for Conservation and Research of Endangered Wildlife says Elvis has demonstrated 97 percent accuracy in detecting polar bear pregnancies.

But the Kansas City Zoo plans to keep caring for Berlin as though she may be pregnant, just in case.