High Quality Content by WIKIPEDIA articles! A vegetarian hot dog (sometimes referred to as a "veggie dog") is a hot dog produced completely from non-meat products. Vegetarian hot dogs are sometimes eaten by non-vegetarians because they are lower in fat, calories, and contain no cholesterol compared to hot dogs from animal meats. Unlike traditional home-made meat sausages, the casing is not made of intestine but of synthetic ingredients. Vegetarian hot dogs are usually based on some sort of soy protein.