![Soyouthinkyouknowyourdog.Buthowwelldoesyourdogknowyou?S...]( "Soyouthinkyouknowyourdog.Buthowwelldoesyourdogknowyou?S...")
- 问题详情：Soyouthinkyouknowyourdog.Buthowwelldoesyourdogknowyou?Sheprobablyrecognizesyouwhensheseesyou.Butcanadogtellbysimplylookingatyouwhetheryouhaveahappyoranangryexpressiononyourface?ResearchersinAustriahavetaughtpetdogstoknowthedifference.Dogsarev...
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