Figure 2
From: Effect of pitch range on dogs’ response to conspecific vs. heterospecific distress cries
Boxplots of Score of intensity of dogs’ response to distress cries from human babies and puppies in either their natural or modified frequency (950 Hz or 450 Hz) by (a) Sex, (b) Call frequency, and (c) the interaction between Caller Species and Call frequency. Male dogs’ reactions were scored lower than female dogs’ (F1,23 = 5.5, p = 0.027), while reactions to cries in the conspecific range were given higher scores than cries in the heterospecific range (F1,67 = 4.3, p = 0.042), regardless of Caller species (F1,67 = 5.5, p = 0.488). There was no significant interaction between Caller species and Call frequency (F1,68 = 0.1, p = 0.738).
