Anxiety-related behavior frequency (Y axis) as a function of four conditions (X axis): before aggression (BA), after aggression in absence (AA) and in presence of affiliation (AP), and matched control (no event; MC). In all cases (A–D) the difference across conditions was significant (Friedman's test: 26.749 ≤ χ2 ≤ 35.574, p < 0.001). Behavior considered and pairwise comparison results via Bonferroni-Dunn test: (A) Yawning (Y)—Significant differences: BA/AA (Q = −0.773, p = 0.030), MC/AA (Q = 0.852, p = 0.012); trend: AP/AA (Q = 0.693, p = 0.071); not significant: BA/AP (Q = −0.080, p = 1.000), MC/BA (Q = 0.080, p = 1.000), MC/AP (Q = 0.159, p = 1.000); (B) Head/body shaking (HBS)—Significant differences: BA/AA (Q = −0.955, p = 0.003), AP/AA (Q = 0.864, p = 0.010), MC/AA (Q = 0.818, p = 0.018); not significant: BA/AP (Q = −0.091, p = 1.000) BA/MC (Q = −0.136, p = 1.000), AP/MC (Q = −0.045, p = 1.000); (C) Body scratching/rubbing (SCRU)—Significant differences: BA/AA (Q = −0.966, p = 0.003), AP/AA (Q = 0.727, p = 0.049), and MC/AA (Q = 0.807, p = 0.020); not significant: BA/MC (Q = −0.159, p = 1.000), BA/AP (Q = −0.239, p = 1.000), MC/AP (Q = 0.080, p = 1.000); (D) Vacuum chewing (VC)—Significant differences: BA/AA (Q = −0.773, p = 0.030), AP/AA (Q = 0.773, p = 0.030), AA/MC (Q = 0.727, p = 0.049); not significant: BA/AP (Q = 0.000, p = 1.000); BA/MC (Q = −0.045, p = 1.000) AP/MC (Q = −0.045, p = 1.000). Vertical bars: Standard Error (SE) around the mean (circles). The asterisk marks the trend of significance (0.5 ≤ p ≤ 0.1).