Flaxseed comes from the flax plant and is sold as whole seeds, ground meal, and flax oil for baking, cereals, smoothies, and supplements. It is also used in some commercial pet foods and treats as a source of fiber and plant-based fats. Whole seeds are very small and glossy, usually brown or golden.
Ground flaxseed is easier to digest than whole seed and is the form most often mixed into food. Recipes may add flax to muffins, breads, granola, and shakes, and those finished products often include sugar or fat from other ingredients. Flax oil is concentrated fat and should be measured carefully.
Because whole flax passes through digestion with limited breakdown, many people grind seeds fresh before use. Ground flax absorbs water and thickens mixtures quickly. Hydration and portion size both matter when introducing it to pets.
For pets, small portions are important because excess fiber or oil may cause loose stool, gas, or stomach upset. Use plain, unsweetened flax products and avoid large amounts.
