12 Reasons Why Dogs Are Man's Best Friend

They know us better than we know ourselves. Having a fabulous day? Your dog knows and wants to play. Feeling sick or sad? Your dog can tell and will leave you alone or comfort you (yes, she knows which you need). Now, that’s a good friend.
They’re smarter than we think. Dogs help military and police departments around the world to sniff out drugs and bombs or to track and locate missing persons.