“…the capacity to experience and share the emotions of others, is considered an evolutionary well-preserved mechanism that helps individuals to survive, not only in a dangerous savanna, but also within social groups (Preston and De Waal, 2001;de Waal, 2008;Kim et al, 2019) . Rodents, like many other animals, experience and learn from emotional contagion, as shown in studies on emotional contagion for pain (Church, 1959;Langford, 2006;Langford et al, 2010;Atsak et al, 2011;Pereira et al, 2012;Li et al, 2014;Cruz et al, 2020) and observational fear conditioning (Kavaliers et al, 2003;Jeon et al, 2010;Kim et al, 2010;Allsop et al, 2018;Keum and Shin, 2019;Nomura et al, 2019).…”