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Contact: Evan Lerner
elerner@upenn.edu
215-573-6604
University of Pennsylvania

Gelada Monkeys Fend Off a Bachelor

Caption: Gelada monkeys, a leader and follower, fend off a bachelor.

Credit: Noah Snyder-Mackler

Usage Restrictions: With Credit

Related news release: Researchers from Penn, Michigan and Duke study how cooperation can trump competition in monkeys


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