Hot dog sausages are typically smaller and thinner compared to regular sausages, making them easier to fit into a hot dog bun. They are also often pre-cooked, meaning they only need to be heated before serving. The seasoning in hot dog sausages is usually milder, designed to complement common hot dog toppings like mustard, ketchup, and relish. Regular sausages, on the other hand, come in various sizes, flavors, and textures, and may require more thorough cooking before consumption.