Read the passage.  dogs are not only man’s best friend but girl’s best friend, too. my golden retriever, rags, is a loyal companion and protector. she once warned me of a nearby rattlesnake by nudging me away from where the snake lay coiled on a rock. rags seems so much more of a friend than a pet that it’s hard to imagine that deep inside her beats the heart of a wolf. hundreds of years ago, wolves and humans began a partnership: humans provided wolves with food when it was scarce, and some wolves allowed humans to train them to hunt animals and watch over flocks. these wolves became the ancestors of dogs. today, dogs and wolves are alike in some ways and different in others. for example, both animals are very intelligent and social, and they communicate in similar ways. but dogs enjoy human company, whereas wolves are independent. when i look at rags, i can see a bit of the wolf in her. mainly, though, what i see is the friend in her. which detail is related to the main idea of the passage? wolves are independent. wolves and dogs share some traits. dogs are man’s best friend. rags is a loyal companion.