I am amazed how dogs, cats, crows, pigeons and so on are able to adopt to life in cities. They even use metro, they respect traffic lights, pedestrian crossings etc.
In some cities you can see also wending machines where you can put used plastic bottles which pays for food for stray dogs.
It is only the question of time when they will figure out how to insert bottle into vending machine to earn more food.
This is photo from Italy where thirsty dog know where and how he can get fresh water.