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. 2019 Sep 24;10:654. doi: 10.3389/fendo.2019.00654

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Copyright © 2019 Estumano, Ferreira, Bezerra, da Silva, Jardim, Santos, Gustavo, Mattos, Ramos, Jóia de Mello, da Costa, Lopes and Hamoy.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Agonistic behaviors recorded in the tests using a resident–intruder paradigm. (A) Number of events of dominant behavior (contact events), (B) duration of dominant behavior, (C) number of events of aggressive behavior, (D) duration of aggressive behavior, (E) number of total events of dominant + aggressive behaviors toward the intruder (contact time, offensive posturing, and the number of attacks and bites), (F) total duration of dominant + aggressive behaviors toward the intruder. The data are expressed as means ±SD (n = 6–7 animals/group, *p < 0.05 and **p < 0.01). (TST, testosterone).