i am portuguese and in my country i lived near the city and to earn some extra money i started doing pet sitting the first dogs i passed were small and with experience i started feeling confident to start walking dogs of Larger size, besides walking with them, there were days in the week that went to their house to see if they had food and water and playing with them usually spent one to two hours playing with them were usually days when the owners wanted to walk with they later so it wasn't me who took them out.