Grain-free formulas are pet foods that do not contain traditional grains like wheat, corn, or rice. Instead, they often use alternative sources of carbohydrates, such as potatoes, peas, or sweet potatoes. These formulas are designed to mimic a more natural diet for pets, particularly for those with sensitivities or allergies to grains. Many pet owners choose grain-free options for their animals, believing they may improve digestion and overall health. However, it's essential to consult with a veterinarian before switching to a grain-free diet, as some pets may require specific nutrients found in grains for optimal health.