Man’s best friend. Most loyal and reliable companion . Who gives unconditional love . The dog is the first animal domesticated by man. For over 15,000 years , he keeps people company , I believe, defends and gives them unconditional affection . The domestic dog has retained many of the characteristics of its ancestor , the wolf . Sociability , attachment to animal -driver (man) , the spirit of the pack instinct defense of the territory and hunting instincts are defining features of this quadruped . The dog in the video below captures is very brave because even in the face of two bears