What are important names to look for on food labels if your a vegetarian?

Question

i've heard that oreos contain animal fat, and i don't know if there are other common foods that do also. and i don't know what the names of animal bi-products are, so i can find them on the labels. please answer (:

Answer 1

Glycerine.It can either be plant or animal derived. There is no way to tell unless it says on their website or you call :[

Answer 2

Gelatin is a non-vegetarian ingredient that you might see on some labels.