Chimps Show Lethal Side 0 Randall Gross ScienceApril 2012Sunday, April 15, 2012 at 11:26 am PDT • Views: 1,064 sciencenews.org Adult Males Annual Meeting Anthropologist Michael Wilson Documented Killings Human Intrusions Lethal Attacks New Findings New Study Occasional Chimp Homicides Wild Chimpanzees Wild Chimp Sites