tacobell fan Posted June 19, 2019 Report Posted June 19, 2019 A study published by science journal PNAS News makes the case that domesticated dogs have developed facial muscles over time to better communicate with humans. Quote
Anta Assamey Posted June 19, 2019 Report Posted June 19, 2019 Everything is part of evolution ... why mentioning puppy eyes specifically .. 1 Quote
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