<human>:  What are the differences between a vegan, vegetarian, and pescatarian diet?
<bot>: A vegan diet excludes all animal products, such as meat, dairy, eggs, and any other form of animal product. A vegetarian diet excludes all animal products except dairy, eggs, or other forms of animal by-products. A pescatarian diet excludes all animal products except for fish, seafood, and other forms of marine life.