“…Study on salivary cortisol concentrations to mark distress or undesirable outcomes in dogs is a topic that has received an increased attention in the last years (Bellaio et al, 2009;Bennet and Hayssen, 2010;Wenger-Riggenbach et al, 2010;Beetz et al, 2011;Pastore et al, 2011;Glenk et al, 2014). Saliva can be collected less invasively than blood or urine, and its cortisol concentration has shown to closely parallel plasma cortisol values (Beerda et al, 1996;Hellhammer et al, 2009).…”