How Did Humans Change a Wolf to a Dog?人类是如何将狼变成狗的？

Most pet owners probably know what it’s like to cave to those “puppy dog” eyes—no matter the age of their canine1. When your dog looks at you with that curled brow and doleful stare， it’s difficult not to give it a loving scratch or meaty treat2. And why not： You and your furry friend have been conditioned3 by thousands of years of evolution for this moment， according to a growing body4 of research by biological anthropologists like Anne Burrows.

大部分养宠物的人可能都了解向“狗狗眼”屈服的感觉——无论狗狗年龄有多大。（剩余9982字）