A study that was led by Corsin Muller of the University of Vienna, tested 50 dogs of different breeds on there ability to detect the different size in balls. The tense ball being the “normal” size ball a dog would be use to. Female dogs stared at the larger balls that were rolled behind a transparent wall longer than the male dogs did. They cannot say if there are differences between male and female dog brains because they have to do more study and research.
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