アメリカ自然史博物館のインスタグラム(amnh) - 8月27日 03時16分

Happy #NationalDogDay! Dogs evolved from a shared ancestor with wolves at least 10,000 years ago. Studies show that, compared to wolves, canines are generally more interested in humans and more cooperative with their commands. Recently, scientists have posited that there’s a genetic basis for this bond, with hypersocial dogs carrying variants of genes that underpin their friendly behavior. Other researchers argue that humans may have bred a behavioral syndrome into dogs as canines were domesticated over the years. Some research suggests that dogs can read human facial expressions and intonation, display empathy, and even communicate jealousy. They tend to yawn more in response to their owners’ yawns than to the yawns of unknown humans, and they can read our gestures more readily than chimpanzees can. One experiment even shows that staring into a dog’s eyes can activate the same hormonal response that bonds parents to their babies. How are you going to celebrate National Dog Day? Let us know in the comments! Photo: bark #dog #dogs #dogsofinstagram #dogsofinsta #amnh

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