Cat Vomit Yellow Foam. Vomiting that occurs with bile which may be yellow or green and/or foamy. So, if you know that your cat is hungry, there is not much need to worry about vomiting.
If a cat’s vomit is yellow, this is also an indicator that bile is present. This is why vomit of this color is connected to bile. There are a number of reasons why a cat may expel the yellow foam or fluid known as bile.
