“…Considering the known benefits of AAI in adults (Charry- Sánchez et al, 2018), previous studies have investigated the benefits of AAI in preschool children with disabilities. In this line, benefits on interhemispheric coherence (Sánchez et al, 2018), gross-motor function (Champagne & Dugas, 2010;Hamill et al, 2007), social function (Kraft et al, 2019), or attention (Anderson et al, 2019) have been reported. However, the heterogeneity of AAI studies in preschool children is large, including different health conditions (autism or Down Syndrome, among others (Champagne & Dugas, 2010;Sánchez et al, 2018)), duration (one single session to 12 weeks (Hemachithra et al, 2020;Kraft et al, 2019)), therapy animals (dogs, dolphins or horses (Anderson et al, 2019;Hamill et al, 2007;Sánchez et al, 2018)), study designs (since randomized controlled trials to crossovers (Gee, Belcher, et al, 2012;Kraft et al, 2019)) or outcomes reported (focused on mental, physical or social variables (Beetz et al, 2015;Moriello et al, 2020;Sánchez et al, 2018)).…”