Cats are very clean animals, grooming themselves daily with their tongues until their fur is smooth and clean. During this process, some hair is ingested. Some of this hair is excreted in feces, while the rest accumulates in the body. When it grows large enough, the cat will vomit it up. However, some cats cannot vomit up hairballs. Over time, these undigested and unvomitable hairballs can grow large enough to block the digestive tract, leading to a range of illnesses. 
How to prevent hairballs in cats:
1. Frequent brushing is the best way. Especially during seasonal changes, take some time to brush your cat's fur. This can effectively prevent hairballs.
2. Cat grass. Cat grass can stimulate a cat's intestinal peristalsis, allowing the cat to expel some hairballs from its stomach through vomiting. Cat grass can not only relieve hairballs in cats, but also improve the cat's oral environment and relieve the cat's mental stress.
3. Feed your cat food that helps control hairballs. Some cat foods on the market have special formulas that help control hairballs, reducing the accumulation of hair in the cat's body and preventing hairballs from forming.
4. Encouraging your cat to drink more water can provide ample moisture to its skin and fur, which can help reduce shedding. In addition, drinking more water can increase your cat's metabolism and lubricate its digestive system.
