<human>:  What is the difference between vegan and vegetarian diet?
<bot>: The main difference between vegan and vegetarian diets is that vegan diets generally exclude all animal products, including dairy and eggs, while vegetarian diets may include some animal products. Vegans typically follow a plant-based diet that avoids all animal-derived ingredients, while vegetarians may limit their animal product consumption but still eat dairy, eggs, and other animal products.