Fig. 3

Reciprocal social interactions in a novel cage. a Male–female interactions expressed by the number of orofacial, orogenital, and body contacts initiated by WT and mdx resident mice towards control intruder females. b–d Male–male interactions expressed by the behavioral responses initiated by WT (white bars) and mdx resident male mice (black bars) during interactions with WT and mdx male intruders (intruder’s genotype indicated on the X-axis). Histograms show the number of contacts (b), dominant acts (c), and pursuits (d) performed by resident test mice. e–g Behaviors initiated by WT and mdx intruder male mice during interactions with WT and mdx male residents. Histograms show the number of contacts (e), dominant acts (f), and pursuits (g) performed by the intruders. *p < 0.05