A psychological study of fans of death metal suggests that they are not desensitised to violence despite the genre's association with growling, often graphically violent lyrics including depictions of cannibalism.
His remarks have often caused controversy, such as when in 2006 he had to apologise to the entire country of Papua New Guinea after suggesting it was known for " cannibalism" .
Meanwhile, cannibalism is less common in birds than in other groups, but certain species will eat diseased or dead hatchlings as a way of disposing of the bodies before they can attract maggots.