Cat Diarrhoea: Causes, Symptoms and Treatment | VetPartners

Cat diarrhoea

Diarrhoea in cats can have various causes and can get better on its own. If your cat still has diarrhoea symptoms after 24 to 48 hours or seems unwell, speak to your veterinary practice. They can help you work out the cause and develop a suitable treatment plan for your cat, which might include changes to their diet, medication, hydration or deworming.

Our VetPartners practices are on hand to support you in all aspects of caring for your beloved cat. 

We know… cat diarrhoea is not the most pleasant of topics! While it can be common, it’s helpful to know the signs to look out for and when to check in with your veterinary practice. 

In simple terms, diarrhoea in cats means loose stools or watery faeces (runny poo). It can have many causes and in some cases can resolve itself, however, it may indicate something more serious that requires veterinary treatment.  

If you’re concerned about your cat or they are unwell, please reach out to your local practice for support. 

My cat has diarrhoea. What can I do right now?

  • Call your veterinary practice for advice.
  • Provide your cat with plenty of fresh water, and easy-to-digest food if they are eating normally.
  • Make a note of how long the diarrhoea has lasted and any symptoms your cat has.
  • Contact your vet straight away if your cat’s poo is black and tarry, has blood in it, or if your cat is also vomiting.
  • Check for loss of appetite, dehydration or weight loss – contact your vet immediately if you notice these signs.

What is cat diarrhoea?

Diarrhoea in cats refers to loose, watery or frequent/runny stools (poo). Although it isn’t a health condition in itself, it can be a symptom of underlying health issues.

Cat diarrhoea is common and often mild, and your practice team can help get your cat feeling better if treatment is required.

Frequency

Cats with diarrhoea may poo much more than they usually would, and may not be able to control their bowel movements.

Consistency

Normal, healthy cat poo is firm and dark brown. If your cat has diarrhoea, their poo will be loose or watery in consistency.

What are the common causes of cat diarrhoea?

The causes of diarrhoea in cats can vary. Some of the common causes include:

  • Dietary changes (especially sudden diet switches).
  • Food intolerances.
  • Parasites.
  • Infections.
  • Toxins.
  • Stress.
  • Illness.

This list is not exhaustive, as there can be many potential causes of diarrhoea in cats. Your veterinary practice can work out any underlying causes and recommend appropriate treatment for your cat.

What signs and symptoms should I look out for?

Symptoms that often accompany diarrhoea in cats can include frequent, loose stools and urgency (needing to go immediately and often).

Some cats may also vomit, lose weight or show signs of dehydration or lethargy, as cats can dehydrate quickly if they pass a lot of diarrhoea and aren’t eating and drinking.

Cats with diarrhoea might also be reluctant to eat or drink or have mucus or blood in their poo – always let your vet know if this happens, so that they can provide the right care.

FAQs

What should I do if my cat has diarrhoea?

What to do if your cat has diarrhoea will depend on the severity, how often it’s being passed and whether your cat is vomiting and/or unwell. 

Reach out to your vet if your cat has bloody diarrhoea or lots of incidents or accidents in the house, is vomiting or has stopped eating or drinking.  

Can diet changes cause diarrhoea in cats?

Diet changes and sudden switches can cause diarrhoea in cats. Your vet can diagnose the likely cause of cat diarrhoea and recommend a suitable cat diarrhoea treatment.  

It’s best to transition to new diets gradually and consult your vet for advice if your cat is unwell or has persistent or bloody diarrhoea. 

How long is diarrhoea normal in a cat?

If your cat is still eating and drinking, acting normally and pooing at normal intervals, symptoms will normally settle down or improve after 24 hours.  

If the diarrhoea continues or your cat becomes unwell or stops eating and drinking, make an appointment with your vet.  

Should I stop feeding my cat when they have diarrhoea?

You can offer easy to digest food, such as boiled chicken or poached white fish, and plenty of fresh water. If your cat is still eating and drinking, acting normally, and pooing at normal intervals, things will normally settle down or improve after 24 hours.  

Ring your vet if your cat has stopped eating or drinking, is losing weight, is showing signs of dehydration or the diarrhoea is not improving after 24 hours.

Can fleas or worms cause diarrhoea in cats?

Parasites such as worms can be a potential cause of cat diarrhoea.

Your vet can diagnose the likely cause of diarrhoea and recommend a suitable treatment plan for your cat, such as an effective and appropriate parasite treatment.

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