You can reward your dog with outstanding nutrition in every tasty bite of Iams Original Formula Large Biscuits. Made with essential vitamins and minerals, our biscuits are formulated using high-quality ingredients similar to those in Iams ChunksÂ® or MiniChunksâ¢ to ensure that you are giving your dog a nutritious treat that you can feel good about. The crunchy texture helps control tartar to promote clean teeth, fresh breath and healthy gums. Our biscuits are made from real chicken protein to give your dog the great taste he loves and the nutrition he needs. Large biscuits are an ideal size for medium to large breed dogs.