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. 2019 Sep 20;13:216. doi: 10.3389/fnbeh.2019.00216

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Copyright © 2019 Guarraci and Frohardt.

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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Photograph of a typical paced-mating behavior test where a female rat can mate with one male rat (A). Photograph of a partner-preference test where physical contact is restricted between a female rat (center compartment) and a male stimulus (left compartment) or a female stimulus (right compartment). Both stimulus animals behind wire mesh (B). Photograph of a partner-preference test where physical contact is not restricted between a female rat (center compartment) and a male stimulus (left compartment) or a female stimulus (right compartment) (C). Photograph of a mate choice test where a female rat could interact freely with either of two male stimulus animals (D).