Where do hairballs come from?
When a cat grooms itself, the hair goes directly into the digestive tract. There, most of the hair should be dissolved and eliminated through your cat’s poo. The hair that remains has to come out by other means. When your cat “coughs up” a hairball, it is actually puking out the hair. Many people believe the hair goes to the lungs or some sort of “sack” when it actually goes to the stomach and intestines.