A late 19th century photograph from Antwerp, Belgium shows a typical milk cart pulled by dogs. (Wikimedia Commons)
Up until the end of the 19th century in Europe, especially Belgium, France, Germany, and the Netherlands, dogs were commonly used by farmers to pull small carts full of milk from the country to the city in order to sell it on the street.
The animals were also used to haul vegetable and bread carts, and other goods.
The practice was banned in England in the mid-1800s as cruel.
Around 190o, in Germany, dogs began being replaced by donkeys for this type of work.