Vomiting in cats

Vomiting in cats

By
✔ MRCVS
GPCert(ExAP)
DVM
Reviewed by Dr. Valter Carlos
✔ MRCVS
LMV
MSc
Updated October 16, 2025
5 min read

What to do

Causes

When to worry

Prevention

Diagnosis

Home treatment

Recommended products

Vet treatment

Risk

Other causes of vomiting in cats

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Vomiting in cats

Vomiting in cats

By
✔ MRCVS
GPCert(ExAP)
DVM
Reviewed by Dr. Valter Carlos
✔ MRCVS
LMV
MSc
Updated October 16, 2025
5 min read

Vomiting or sickness is a very common problem in cats. In most cases, they get better on their own or with supportive management.

When cats eat grass, bugs, or their own fur, they can be sick afterward. This is not normally a reason for concern, and they can be cared for at home. Sometimes they may have diarrhoea too. We call this gastroenteritis. It’s important that vomiting cats stay hydrated and maintain stable blood sugar levels.

What to do if your cat is vomiting

Why your cat is being sick

When to be worried about your cat being sick

Tips to prevent your cat from vomiting

How to know if your cat is about to be sick

How to treat a vomiting cat at home

Recommended products for vomiting in cats >Recommended products for vomiting in cats [Recommended products

How a vet will treat your vomiting cat in practice

Are some cats more at risk of vomiting?

Other causes of vomiting in cats

Vomiting is often caused by irritation of the lining of the stomach and/or intestines. This is called gastritis, or gastroenteritis if diarrhoea is present too. In cats, vomiting is a symptom of many different problems, such as:

  • Eating something they shouldn’t have, such as plants, insects, small lizards

  • Sudden changes in food

  • Infections:

    • Viral: Feline Panleukopaenia Virus

    • Bacterial: Helicobacter, Salmonella

    • Parasites: roundworms

  • Foreign bodies:

  • Obstructions: caused by masses or intussusceptions

  • Food allergies or intolerances: reaction to an ingredient in their food. May cause vomiting, diarrhoea and itchy skin.

  • Eating something toxic or poisonous

    • Plants:

      • Lilies

      • Rhubarb

      • Castor bean

      • Nightshade

    • Human medication:

    • Insecticides or anti-parasite treatments for other species

      • Pyrethrins/Permethrins (topical flea and tick treatments for dogs)

      • Organophosphates

      • Arsenic

    • Anti-freeze

  • Illnesses of other organs:

  • Generalised infections: sepsis or peritonitis

  • Tumours

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