Bob Lessnau, curator of mammals at the zoo, said Talini and male polar bear Nuka appear to be taking a liking to one another, WWJ-TV, Detroit, reported Tuesday.
"The two are always together, swimming and playing," Lessnau said.
He said officials tried to get Talini to mate with a male two years ago, but she rejected his advances. Lessnau said the latest effort is showing more positive signs.
Lessnau said if the polar bears mate, there could be a baby born at the zoo as early as November.