In the morning of lactation days 2 and 3, prairie vole mothers were tested for 5 min on the elevated plus-maze for anxiety-related behavior and in the forced swim test for passive stress-coping, respectively. (A) On the elevated plus-maze, fs mothers displayed higher anxiety-related behavior compared to fp mothers, indicated by a significantly less percentage of entries into and a trend towards less percentage of time spent on the open arms. (B) In the forced swim test, fs mothers spent more time on passive stress-coping (floating), resembling increased depressive-like behavior. For further details, see legend to Fig. 1. Data are presented as mean + SEM, n = 5 – 6 per group. * p ≤ 0.05 versus fp; (*) p = 0.06.