It is abnormal for a cat not to spit out hair balls. Generally, cats will vomit hair balls more or less during the moulting period, because cats often lick their fur and lick the hair into their stomachs. If their intestines and stomach cannot digest it, they will spit out hair balls. ​​​​​​

If the cat does not vomit hair balls for a long time, the hair will accumulate for a long time and cannot be discharged, which will affect the cat's spirit and appetite, and the hair will also be affected. In severe cases, it can cause gastrointestinal obstruction in cats, leading to dehydration and organ failure.

The owner gives the cat some cat grass and hair removal cream during the moulting period to help the cat expel hair balls.