For example , experiments by michael meaney and colleagues at mcgill university have shown that when rat mothers are affectionate to their young , the baby 's epigenome promotes a gene that helps the pup remain calm even in stressful situations .
I felt like a scared little pup , because there were so many people in one room .
我感觉自己是一条受惊的小狗,因为有那么多人挤在一个房间里。
The original pup gave up his doggy ghost , but this legendary hound lived on for decades in the body of sons , grandpups and distant relations , populating dreams and animating screens , big and small .