Question: what are some of the different types of vegetarian diets?
Answer: Lacto-vegetarian diets exclude meat, fish, poultry and eggs, as well as foods that contain them. ... 
Ovo-vegetarian diets exclude meat, poultry, seafood and dairy products, but allow eggs.
Lacto-ovo vegetarian diets exclude meat, fish and poultry, but allow dairy products and eggs.