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Social and demographic correlates of male androgen levels in wild white-faced capuchin monkeys (Cebus capucinus)  
Authors: Franka S. Schaebs, Susan E. Perry, Don Cohen, Roger Mundry, Tobias Deschner
The Challenge Hypothesis links levels of androgens (steroid hormones responsible for the regulation of aggressive behavior and muscle mass in males) to aggressive competition among males for breeding ... read more
Comparison of male conflict behavior in chimpanzees (Pan troglodytes) and bonobos (Pan paniscus), with specific regard to coalition and post-conflict behavior
Authors: Martin Surbeck, Christophe Boesch, Cédric Girard-Buttoz, Catherine Crockford, Gottfried Hohmann, Roman M. Wittig
Coalitions among males during conflicts have a strong influence on the competitive and social environment within groups. Such political coalitions may represent an ancestral state in humans, impacting ... read more

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Click on the link to see the abstract from the top AJP article that currently has the highest Altmetric score. (Altmetric is a service that tracks and measures the broader impact of scholarly articles and datasets across traditional and social media, online reference managers, post-publication peer-review sites, and public policy documents.)

Neufuss, J., Humle, T., Cremaschi, A., Kivell, T.L. Nut-cracking behaviour in wild-born, rehabilitated bonobos ( Pan paniscus ): a comprehensive study of hand-preference, hand grips and efficiency. DOI: 10.1002/ajp.22589
Link: http://onlinelibrary.wiley.com/doi/10.1002/ajp.22589/abstract

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