Figure 1.

Combined first-attempt indication accuracy of scent-matching dogs (n = 4) on the scents of five species of active foraging snakes and the puff adder (Bitis arietans) and its shed skin. All accuracy scores for active foraging snakes and puff adder shed (Shed) are significantly different from random chance, while accuracy scores for scent from both wild and captive puff adder (B. arietans) are not. AHS, aurora house snake (Lamprophis aurora); BHS, brown house snake (Boaedon capensis); RNA, rhombic night adder (Causus rhombeatus); CS, corn snake (Pantherophis guttatus); CFS, common file snake (Gonionotophis capensis); Captive and Wild, captive and wild, free-ranging puff adder (Bitis arietans). Error bars represent standard error and shared lettering indicates non-significant differences among samples.