Why are guide dogs friends of human beings? Write a composition.

Dogs are the eternal friends of mankind.

Dogs are the eternal friends of mankind. They are friendly and loyal and always serve the people.

Dogs are friendly to humans. It uses intimacy to express its love for its master, and it takes attachment as fun and makes people happy. It doesn't have the same thinking ability as people, but it has emotional enthusiasm. Darwin once said: "Love for people has become the instinct of dogs." I have a little poodle. It has soft and smooth fur, big ears fluttering in the wind and two eyes like black gems. Agile, elegant, really cute. Whenever I come home from school and open the door, maybe my family is doing something by themselves, but my dog will definitely lie on the door, wait for me to open the door, jump on me and give me a warm hug, jump around me happily, and the fatigue of the day suddenly disappears.

Loyalty is the most precious quality of a dog. "A dog doesn't think his family is poor" and is loyal to his owner. No matter what his master orders him to do, he will go through fire and water. Working dogs, in particular, will always fight with their owners: police dogs will be fatally attacked by criminals at any time, and search and rescue dogs in snowy mountains are in danger of being buried alive again every second ... what supports them to risk their lives fearlessly? They have no concept of honor, no temptation of money, and the only reason is their loyal nature.

Dogs are good helpers of human beings. Blind people live in the darkness of pain, but with guide dogs, they have a pair of eyes and crutches given by God. In every disaster, search and rescue dogs will appear in various dangerous places, bringing a glimmer of life to survivors with their sensitive sense of smell and vigorous skills; Drug dogs are conscientious "policemen" who crack down on one evil drug trafficking activity after another at customs, airports and road checkpoints. In nursing homes, lonely old people who lack the care of their children are comforted by kind dogs.

Dogs have been friends of mankind since ancient times and will be friends of mankind in the future. If human society wants to develop harmoniously, it must live in harmony with nature and respect and care for all kinds of life, including dogs. Let's be kind to these forever good friends of mankind!