Figure 2
From: Effects of selection for cooperation and attention in dogs
Performance of the brachycephalic and dolichocephalic breed groups in Study 2. Columns show the group results compared to chance level (one sample t-test) and to each other (independent sample t-test). *** p < 0.001. The numbers in the columns show the percentage of the successful subjects within a group (measured at the individual level with binomial test).