A particularly cruel death for an animal is as a result of poison carefully coated on an arrow head which detaches from the shaft on impact and travels into the body. There the poison enters the blood and disrupts the rhythm of the heart as well as leaving necrotic flesh and a painful wound. The Giriama people whose tribal homeland is the coastal belt of Kenya are the best poison arrow makers. This lethal poison is made from the bark of the Acokanthera tree yet not all Acokanthera trees are deadly, only some, and the poisoned arrow making technique is only known by a few people. The bark, berries, leaves and fruit of a potent tree can all be used to make a thick tar like substance and sometimes even lizards, shrews, snakes and other creatures are combined into the mixture, which is believed by some to contribute to its lethal affect. The poison is then plastered on the metal arrowhead and wrapped in a protective cover of thin leather cloth, which is removed just before the arrow is fired at its target.