Lacto-ovo vegetarians are people who do not eat meat, but do include dairy products (lacto) and eggs (ovo) in their diets.

A choice; no one can force you to be one! Many never choose vegetarianism.

I'm guessing ovo-lacto vegetarianism--it has the least restrictions of vegetarian diets that I know of...

Lacto-ovo vegetarianism is sometimes recommended as a dietary therapy for a variety of conditions, including heart disease, cancer, diabetes, stroke , high cholesterol, obesity, osteoporosis, hypertension

ovo-lacto-vegetarianism