Q: "My cat has been vomiting white foamy stuff and has lost her appetite the last couple of days. Should I take her to the vet?" A: Occasional vomiting is all too common in cats; about 54% of cats ...

If your cat is vomiting a lot, it might be digesting hairballs when grooming itself. For this, there are over-the-counter hairball remedies, writes Cathy M. Rosenthal. Dear Cathy: I have a 12-year-old ...