After a major invasion of the Gaza Strip in late 2008, twenty-year-old Mahmoud Barghout decided to become a zookeeper. He saw that the children around him were exhausted by war, and so to provide respite, he set up the Happy Land Zoo. But the war made feeding and caring for the animals impossible--they died of thirst, hunger, or injury--and replacing them meant finding large sums of money and overcoming the blockade or the risk of bringing them in...