WASHINGTON (AP) — A panda at Washington’s National Zoo that has been tending to her squealing newborn cub also gave birth to a stillborn cub Saturday that wasn’t fully formed and was never alive outside the womb, a zoo official said.

Mei Xiang (may-SHONG) gave birth to the motionless cub Saturday night after giving birth to its live twin the night before, zoo spokeswoman Pamela Baker-Masson said. The mother groomed her stillborn cub for 17 minutes before letting it fall to the floor, she said.