
For centuries, people have claimed that dogs are one of their closest friends. Of all the domesticated animals, dogs can fulfill a variety of roles: protector, helper, rescuer, and companion. Dogs are man's best friends and have been that way for centuries. The relationship between dogs and humans is very deep and ancient.
Dogs and humans began living together 15,000 years ago when dogs migrated with humans throughout East Asia. Their bond with humans was very strong because both humans and dogs are social creatures.
Although domestic dogs are 99% related to wolves in their DNA, dogs are not like wolves, instead of reacting defensively to others, they radiate warmth and affection, making them a prime candidate for man's best friend.
Dogs have been domesticated to the point where they need us to survive. But we can also find that we need them in much the same way, i.e. humans and dogs have now developed a symbiotic relationship. Most dog owners will tell you that their dog is part of the family. Because a domestic faithful dog gives comfort, a warm paw and love.

Where did the phrase "man's best friend" come from?
In fact, the phrase "man's best friend" originated in the US Supreme Court in 1870, when a talented lawyer named George Graham West defended a man who was very fond of his dog named Old Drum. The man West defended claimed that when his neighbor killed Old Drum for trespassing, he took the life of more than just a pet - he killed a close family member.
West famously stated, "The only absolute, unselfish friend a man can have in this selfish world—one that never proves ungrateful or conniving—is his dog."

A dog is more than just a pet
Dogs have proven time and again their loyalty, kindness, understanding and indomitable spirit. They happily greet us no matter what and make us feel better, even in a bad mood. Waving his tail in front of us and playing with us.
Whether it is herding sheep, hunting animals, supporting people with disabilities, or simply working as a companion, unlike other pets, dogs help people with everyday tasks, many of which are impossible without them. Starting in the 16th century, dogs were helpers for blind people, and by the 1970s, dog trainers had developed methods so they could help people with disabilities as well.
Dogs also help prevent various crimes and save lives, as is the case with dogs that are looking for drugs and bombs. German Shepherds, a 200 year old breed, are most often used as assistants for police officers around the world.
