Groups Of Chimpanzees Spy On Each Other

New research finds groups of chimpanzees spy on each other, carrying out recon missions to either avoid other groups or to try to encroach on their territory when it's safe to do so. Plus: a visit to the Sign Post Forest in Watson Lake, Yukon. Chimpanzees use hilltops to conduct reconnaissance on rival groups (University of Cambridge)  Take a trip around the world in the Sign Post Forest (Travel Yukon)   Join our group of backers on Patreon - no spying experience necessary