Albert the dog is a scientist, which is why his website is called Dog Scientist. In his video series, he uses his advanced scientific knowledge to eat treats that have been locked away by his humans in various containers.
For this experiment, Albert attempted to get at chicken soup poured into a cylindrical container. His tongue can't reach the soup, so Albert puts balls in the container. This displaces the soup, raising the level of the liquid in accordance with the famous principle of Archimedes of Syracuse. He continues to add balls as the surface of the liquid sinks. What a clever dog!
Despite the popular I Have No Idea What I'm Doing meme, I'm inclined to think that Albert understands what he's trying to do: eat.