Ingestion of large amounts of hair from self-grooming can cause complications with digestion.
This creates hairballs.
Most hair swallowed is usually expelled in the stool. Problems develop when the hair does not pass through the system. A hairball forms in the stomach and that means the cat will likely vomit it up after coughing and choking.
The worse scenario is when hairballs block the intestinal tract. If this happens, it cannot be vomited or excreted through the other end of the system.
Here is what to watch for that may indicate signs of a major hairball intestinal blockage:
Diarrhea
Vomiting of food not fully digested
Unable to defecate
Dry retching
Swollen abdomen
Visit your veterinarian immediately if you see your cat experiencing these symptoms.
A way to minimize hairball problems is to brush your cat on a regular basis to remove loose hair.