RecruitingBehavioural interventionEvaluating Additive Effects of Including Canines in Regulating TogetherThe primary objective is to evaluate the potential additive effect of animal-assisted intervention (AAI) on a manualized behavioral treatment targeting emotion dysregulation (ED) in children with autism spectrum disorder (ASD). Aim 1: Evaluate whether Regulating Together-Canine demonstrates earlier and greater improvement in emotion dysregulation than Regulating Together-Standard. Aim 2: Evaluate if Regulating Together-Canine increases child engagement and learning compared to Regulating Together-Standard. Exploratory Aim: Explore association of physiological arousal (via heart rate tracking) with emotion dysregulation, treatment engagement, and learning.