bouti1583 Pet Dog Nursing Kit Milk Bottle Feeding with Replacement Nipples There is a scale on the bottle to accurately calculate the feeding quantity The rubber material is durable, safe, and non-toxic. Easy to clean with a brush Excellent suitable for the newborn or small pets, like Toy Poodle, Chihuahua, Drever, etc Please note: the numbles of the replaceable nipples are different Please read the USAGE in Product Description before your purchase