If the female cat eats a large amount of food before giving birth and will vomit during delivery, the cat will exert all its strength during delivery and the undigested food in the stomach will be vomited out. The breeder does not need to Worry. Cats need milk for their kittens after giving birth. At this time, the mother cat's nutrition will be lost rapidly. During this period, the owner needs to supplement her nutrition to prevent the mother cat from becoming too thin after giving birth. The lack of milk will affect the kittens.