November 15, 2023 Sasaki, T., Penick, C. A., Shaffer, Z., Haight, K. L., Pratt, S. C., Liebig, J. (2016). A simple behavioral model predicts the emergence of complex animal hierarchies. The American Naturalist, 187(6), 765–775. Home » Sasaki, T., Penick, C. A., Shaffer, Z., Haight, K. L., Pratt, S. C., Liebig, J. (2016). A simple behavioral model predicts the emergence of complex animal hierarchies. The American Naturalist, 187(6), 765–775.