Coren造句

Coren explains the hug in nature is restrictive and may annoy or frighten a dog.

What dogs do know, said Professor Coren, is their position within their social group, whether they are at the top or the bottom of their pack.

Coren教授说，*知道的是自己在他们社会群体中的地位，他在*群中是位高还是位低。