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Social behaviours in asymmetric contest over a shelter. (a) The rate of restrained aggression per minute performed by owners. (b) Total duration (min) of contests when owners were the focal individuals. In both panels, control n = 19 (black), cortisol n = 20 (white) and mifepristone n = 19 (grey). Medians and ±interquartile range are shown. *, p < 0.05.
