A nurser developed to promote the natural feeding of Esbilac, KMR or other liquids to animals and Zoologic Doe Milk Replacer to fawns, when the mother is unable to feed her offspring by herself. The nursing action when feeding with PetAg Nurser Bottles will aid in developing the animal’s facial muscles and encourage normal flow of saliva.PetAg Nurser Bottles have marked graduations on the bottle, making supervising food intake easier and preventing over or under feeding. With a durable and flexible silicon nipple, PetAg Nurser Bottles allow pets to refuse feeding when full. Store in a cool dry place, away from direct sunlight USA