The cub, born on Mother's Day, has been named Billy Ray - after country music and television star Billy Ray Cyrus.
Zoo officials announced the cub's name Wednesday. Zoo officials say the donors who paid to name the animal did so to honor a deceased family member who was a big fan of Cyrus.
The cub's development has attracted attention because caretakers have been hand-feeding him since birth. That's necessary because his mother, Toma, has refused to nurse the now 30-pound cub.
Billy Ray will likely grow up to be about 11 feet long and 450 pounds.