Description Dried herrings contain a lot of Omega-3 and, thanks to their good smell and taste, can be used as a training snack. Made from 100% Baltic herring, these treats are air-dried to preserve the healthy vitamins and Omega oils. Dried herrings are 100% natural products, hypoallergenic and gluten-free. They also contain no artificial colors, preservatives or additives, and are free of grains, soy or other additives.