In Iran the shepherds bring their sheep to market in the larger towns and cities. The sheep are herded by a group of “sheep dogs.” When the shepherds return to their farms they have no more use for the dogs so they cull out those that they don’t want and they cut the pads on their paws so they cant walk. These dogs eventually breed and soon there are hundreds of them in large packs. They are not vicious and they usually forage in the Jubes (open sewers). Many of the Americans would adopt one or more of these dogs and feed them. The dogs would park themselves outside of the apartment buildings where their benefactors lived.
The Iranians being Moslem feel that dogs are unclean and periodically the police would come around and shoot the dogs.