Final Video: Hairball vomiting in a cat with a nemesis (FUS)
Channel: Dr David Sing
Date: 15/04/2016

A very unusual case of possible FUS (Feline Urological Syndrome)

This cat lives with 3 other cats. He is 2.5 years old. He vomits hairballs more often than before and unlike the other 3 cats. I diagnose that he is very clean and so had been over-grooming himself. He shares the same gully-trap area of the bathroom floor with the other 3 cats. The owner will then disinfect the bathroom floor with chemicals. However, all 4 cats share the same pee area. 

This cat is more sensitive and wants to lick up the chemicals. The owner is advised to flush the floor more often to get rid of the chemical disinfectant.

Follow up: 4 weeks later. No more vomiting hair balls as the owner cleans the bathroom floor more often. 

STRESS IN A MULTI-CAT HOUSEHOLD.. 
This cat has a nemesis - another male neutered cat that he would rather avoid. So he could be stressed by having to pee in the same gully trap smelling the odour of his nemisis. Stress is a cause of FUS (Feline Urological Syndrome) and in this cat, his prepuce was swollen indicating a possible lower urinary tract infection.  

In this case, the gully trap area is the common pee area for the 4 cats. This cat has no separate pee area in the bathroom or litter box. The bathroom is small and shared with the 4 cats. 

He would have peed elsewhere but there would be chemicals on the common bathroom floor and the faecal stains of other cats. He groomed himself much more including his preputial area which swelled. So he has to vomit out more hairballs than normal.