“…Hence, PLFs could be used as useful stimuli in canine visual perception research, including but not limited to social cognition abilities (Ishikawa et al, 2018). Examples include studying irrelevant appearance features of the experimenter or familiarity with the experimenter (Carballo et al, 2015; Kerepesi, Dóka, & Miklósi, 2015; Merola, Prato‐Previde, Lazzaroni, & Marshall‐Pescini, 2014; Wells & Hepper, 1999), the clever Hans effect or facilitated communication (Lit, Schweitzer, & Oberbauer, 2011; Pongrácz, Miklósi, Hegedüs, & Bálint, 2013) and olfactory factors (Horowitz & Franks, 2019). Another venue for further research is to study the cross‐modal representation regarding the sex of the played back sounds (i.e.…”