One thing that is a sure bet in life is that if you have a cat, you will need to deal with cat vomit. Cats can vomit for many different reasons and unfortunately it is often difficult to know exactly why a cat is vomiting.
I often get asked what it means if a cat is vomiting white foam. My own cats do this from time to time. They will make a horrible retching and repeated gagging sound and you would think that a huge pile of vomit is about to appear and then just a string of foam spews out. Often when cats keep throwing up foam, there will be multiple piles of foam produced. And if your cats are anything like mine, those piles will be left in the most inappropriate places. My cats' favorite spots are on a rug or in the place where it is very likely to be stepped in.
White foamy vomit really just means that the cat's stomach was empty when he or she vomited. However, we can't draw any conclusions about the cause of the vomiting. It could be anything from just mild stomach upset to a hairball (even if there is no hairball in the vomit), to a foreign object in the stomach, to kidney or liver failure, or a number of other conditions.
If your cat or kitten is vomiting foam should you see the vet? Here are a few pointers to help you make that decision: