Read the passage carefully and choose the best answer to the question out of the four alternatives.

A dog is very sensitive to atmosphere. He knows when you have lost your temper almost before you do and if you want to do anything with a dog never lose your temper! Whatever you do with him, do calmly and under full control, especially when you correct him. Talking of this awareness of atmosphere, his utter loyalty can lead to great jealousy. When I married my little dog-paragon was his name-nearly wrecked the home with his jealousy. The bottom had fallen out of his life when an intruder came into the management of the house, and he would sit about with his back to us, his back a speaking picture of misery, looking blindly into space. It was years before he would condescend to recognize my wife’s existence. More dangerous is the jealousy a dog can develop towards a new baby in the family.
Another thing to remember is that a dog is fond of company, specially that company of his own kind. In a wild state, they habitually go about in groups, either small family groups or in packs, and you see the same instinct at work, in civilization. dogs left loose in streets and in parks will nearly always gravitate into gangs, following each other looking around for mischief, adventure like so many urchins. So it is a good thing to let your dog have plenty of friends. The lonely dog will often become a fighter.
The writer compares loose dogs to urchins because they

• move in streets or parks

• form gangs and look for mischief and adventure

• follow each other around thoughtlessly

• follow each other around thoughtlessly