“…Several of the affective states addressed were derived from the WQA protocol including "absence of prolonged hunger" (evaluated by means of BCS; Ostojić-Andrić et al, 2011;Popescu et al, 2013Popescu et al, , 2014, and good "human-animal relationship" (evaluated via avoidance distance; Mattiello et al, 2009;Popescu et al, 2013Popescu et al, , 2014. The theme of "comfort" [expressed as "cow comfort" (Haley et al, 2000), "comfort situation" (Tarantola et al, 2016), and"comfort around resting" (Plesch et al, 2010;Ostojić-Andrić et al, 2011;Popescu et al, 2013Popescu et al, , 2014] was addressed in 6 of the 14 studies. Stress, as measured by physiological parameters such as cortisol, was addressed in 7 studies (Varner et al, 1983;Redbo, 1992Redbo, , 1993Higashiyama et al, 2007;Veissier et al 2008;Tarantola et al, 2016;Peric et al, 2017).…”