Causes of cats vomiting white mucus:

1. Poisoning. If the cat accidentally eats chocolate, onions, grapes, green baskets, medicines, etc., causing the cat to be poisoned, resulting in symptoms such as listlessness, loss of appetite, vomiting, etc., it is recommended to induce vomiting or gastric lavage enema immediately.

2. Parasitic infection. Cats are infected with parasites and cause damage to the gastrointestinal tract. It is recommended to deworm the cat immediately and feed an appropriate amount of probiotics to regulate the gastrointestinal tract.

3. Infectious diseases. If a cat is infected with a virus, such as feline distemper, and shows symptoms of vomiting, it is recommended to take the cat to the hospital for treatment.

4. Indigestion. If a cat eats too much or spoiled food, it will cause indigestion. It is recommended to feed probiotics to regulate the intestinal tract.

5. Gastroenteritis. When cats suffer from gastroenteritis, they may experience symptoms such as vomiting and foaming, loss of appetite, and depression. It is recommended to use drugs to protect the gastrointestinal mucosa and to control symptoms with anti-inflammatory drugs.

6. Hairy bulb syndrome. Hairballs in cats cause foaming at the mouth. It is recommended to feed hair remover cream and cat grass frequently to promote the discharge of hairballs.