- Study suggests that expressive eyebrows in dogs may be a result of an unconscious human preference that influenced selection during domestication. This would give dogs that move their eyebrows more a selection advantage over others and reinforce the 'puppy dog eyes' trait for future generations. https://arstechnica.com/science/2019/06/we-may-have-inadvertently-selected-for-muscles-on-dogs-faces/ 3 comments science
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