Leonbergers can move, especially when they play with each other. See more pictures of Leos in Action.
Taking pictures of moving dogs is a challenge, especially of Leonbergers with their black faces. Lighting in crucial and many cameras have too long a delay from pushing the button to actually taking the picture. The action has moved on an you only have a tail in the picutre. The arrival of digital SLR cameras has helped a lot. I love trying to capture the joy of moving dogs you can see when they play with each other, run on the beach or through the snow.