There is a guy in my neighborhood (I assume he's homeless, but I could be wrong) who carries scrap metal on a series of carts chained together -- like those big flat carts from Home Depot. His three big dogs pull the whole load (with some help from him). It probably sounds like dog abuse, but all three dogs look like they are part Husky or something, and they look so happy when they are cruising down the street pulling this train of carts behind them. They crack me up every time I see them.