“…On the behavioral observation side, according to the majority of studies, little or no stress behavior is observed in the dogs studied [ 11 , 29 , 39 , 41 , 43 , 44 , 45 , 46 , 47 ]. This diversity of results could be linked to the diverse spectrum of types of AAIs including a heterogeneity in settings, as well as in the different characteristics of handlers and dogs [ 10 , 15 , 26 , 48 ]. Note also that program monitoring and ethical standards related to research effectively limit risks to dog welfare and generalization of results due to lack of fidelity to actual practice [ 41 , 49 ].…”