8 year old cat

Question
My cat is puking up white foam! Why?

Answer
There are many reasons why cats do this. They are sick, they ate something gross and it's coming back up, or they got some medication or something that made the cat foam.

White foam now and then is not bad- it's the yellow foam that signals a really sick cat.
If the cat continues to vomit then it needs to see a vet.