We all know that the dog is considered man’s best friend . This quadruped is always devoted to human due to his intelligence . People adopt dogs because the animals keep company, when you have a bad day he is the one who manages to make you forget the troubles and fatigue accumulated during the day . People have devoted their time in order to train these animals, because dogs react very well to human needs and know how to protect it. The dog is considered one being who never betrays his master , so it is a nice present for people.