Cats vomiting white mucus and losing appetite may be caused by gastroenteritis, parasitic infection, feline distemper virus infection, pancreatitis, hairball syndrome, food allergies, poisoning, etc. Pet owners can: 1. Fast for 12 hours for cats to give their stomachs a proper rest. 2. If there is no vomiting after 12 hours, you can feed some light food. 3. If there is no improvement, it is recommended to take it to the hospital for treatment to avoid worsening of the condition.

What to do if your cat vomits white mucus and loses appetite:

1. It may be 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.

2. It may be 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.

3. It may be hair ball disease. 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.

4. Poisoning may cause the cat to vomit. In this case, the cat needs to be taken to the pet hospital for treatment as soon as possible.

5. It may be that the cat vomits after changing its food. Feed an appropriate amount of probiotics to regulate its gastrointestinal tract. Probiotics mainly mediate intestinal flora and improve intestinal function.