Calf feeding nipple improves digestion by allowing the calf to drink milk at a normal rate, creating a large amount of saliva. Made of high-quality rubber, it can be put in the feeding bottle or other equipment to give the calf the feeling of drinking milk from the mother. Every week, it can be washed in water with acid, lye, or disinfectant. This nipple is safe to use in cow farms for feeding a calf, non-toxic, and convenient to use.