“…in Perry and Capaldo, 2011). Stress, such as induced activity to escape a predator, was shown to elevate catecholamines (Tufts et al, 1987;Withers et al, 1988;Hillman et al, 1998) and resulted in increased release of defensive skin peptides (Ramsey et al, 2010;Pask et al, 2012). The stress of dehydration also resulted in the release of catecholamines in the marine toad (Bufo marinus, now Rhinella marina) (Withers et al, 1988).…”