Some foods that contain animal products might not be obvious, such as potato chips By Laura Moss Published October 24, 2024 04:48PM EDT Dana Lazarus-Casd / Getty Images If you're a vegetarian or vegan, you know the obvious foods to avoid—there's no confusion about where that steak came from. But the other foods that contain animal products aren't so obvious. Food labels can be confusing or even misleading, and some foods that seem like they should be meat-free can contain hidden animal products.