Giant panda gives birth to fifth cub at the San Diego Zoo

A giant panda at the San Diego Zoo gave birth to a cub the size of a stick of butter on Wednesday, her fifth cub born in the zoo since 1999. The sex of the mostly hairless, pink newborn, which was born around 5 a.m., is not known yet, said Dr. Ron Swaisgood of the zoo’s Institute of Conservation Research.