Liver failure caused by an insufficient supply of oxygen caused the death of the giant panda cub last month at the National Zoo.
Oct. 11, 2012 Mei Xiang, the female giant panda that lost its baby last month, takes a nap after being fed a frozen fruit treat at the National Zoo. Chief veterinarian Suzan Murray said a necropsy showed the tiny cub’s lungs were not fully formed. That impeded the flow of oxygen, leading to liver necrosis, or the death of liver cells. Astrid Riecken/For The Washington Post Buy Photo