Ever notice your dog approach you when you cry? Or see how Fido might walk up to a stranger in tears?
원문출처 : https://www.cnn.com/2018/07/24/health/dogs-human-crying-empathy-study/index.html
원문출처 : https://www.cnn.com/2018/07/24/health/dogs-human-crying-empathy-study/index.html