The misconception likely stems from the iconic image of a Saint Bernard with a barrel around its neck, often depicted in paintings and popular culture. This image is meant to represent the breed's role as rescue dogs in the Alps.
However, the barrels were actually used to carry brandy, not water. The brandy was used to warm and revive travelers who had become lost or injured in the snow. The dogs were trained to find and help these individuals, and the brandy was a way to help them recover.
The dogs themselves did not drink the brandy. The barrels were simply a convenient way to transport it to those in need.
So, while the image of a Saint Bernard with a barrel is a powerful symbol of their history, it's important to remember that the barrel was not actually worn by the dog, but rather used as a tool for rescue efforts.