Here is another one where the effect of oxytocin on the social behavior of male mice is investigated and they also point to an attention mechanism:
In the present study, we show that chemogenetic activation of OT neurons within the paraventricular nucleus of the hypothalamus (PVH) of male mice (OT-Ires-Cre) enhanced social investigation during a social choice test, while chemogenetic inhibition of these neurons abolished typical social preferences. These data suggest that activation of the OT system is necessary to direct behavior preferentially toward social stimuli.
Here is another one where the effect of oxytocin on the social behavior of male mice is investigated and they also point to an attention mechanism:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083279/