Diarrhoea in Dogs and Cats: Quick Owner Guide
What counts as diarrhoea
Loose or watery stools, going more often, or straining with small amounts of soft stool. One or two episodes in a bright pet can settle. Ongoing, severe, or bloody diarrhoea needs a vet.
Red flags that need a vet now
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Repeated vomiting, blood in stool, or black tarry stools
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Lethargy, belly pain, or a swollen abdomen
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Dehydration, pale gums, or fast breathing
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A puppy or kitten, seniors, pregnant pets, or pets with other illnesses
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Known toxin or foreign object access
Common causes
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Sudden diet change or rich treats
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Scavenging in the bin or on walks
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Intestinal parasites
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Gut infections and stress
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Food intolerance or other medical issues
What you can do at home for a mild case
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Offer small amounts of water often.
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Skip food for 6 to 8 hours if there is no vomiting, then give a small bland meal.
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Keep your pet rested and watch closely.
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If there is no improvement within 24 hours, see your vet.
Parasites and prevention
Intestinal worms can cause diarrhoea. Regular, on-time prevention helps reduce this risk. Match the correct weight band and follow the label.
Feeding back to normal
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If stools improve, slowly return to the regular diet over 2 to 3 meals.
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Avoid sudden food changes. Introduce new diets over 5 to 7 days.
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Keep treats simple and small while the gut settles.
Safe use checklist
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Weigh your pet and choose the correct pack each time.
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Use dog products on dogs only. Never use dog products on cats.
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Do not combine treatments unless your vet advises it.
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Keep spot-ons away from children and other pets until dry.
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Read the label before every dose and set reminders.
When to follow up
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No improvement within 24 hours
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Diarrhoea with vomiting or pain
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Recurrent episodes over weeks
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Any concern in very young or elderly pets
FAQ
Should I give human diarrhoea medicines
No. Many are unsafe for pets. Speak with your vet first.
Can I prevent every episode
Not always, but steady diet, secured bins, and on-time parasite prevention reduce risk.
My pet had diarrhoea after a flea chew
Mild tummy upset can happen. Offer water and a bland meal later. If vomiting repeats or your pet seems unwell, call your vet.
If you want help matching prevention to your pet’s age, weight and routine, contact us and our team will guide you.
