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Cat Symptom Guide

Cat Diarrhea

Mild diarrhea can resolve, but dehydration and blood need urgent care.

Cat Diarrhea guide image

Evidence

Review status / Updated / Sources

Review status: Clinical reviewer not listed

Updated: Not available

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Owner next steps

What to do now

Cat diarrhea can dehydrate cats quickly when it repeats or occurs with vomiting, appetite loss, or weakness.

Monitor

  • Track stool frequency, appearance, and litter box behavior.
  • Watch appetite, water intake, vomiting, and energy.
  • Keep diet, medication, parasite, and stress-change details ready.

Call a vet

  • Call today for repeated diarrhea, appetite loss, or diarrhea with vomiting.
  • Call sooner for kittens, seniors, or cats with chronic disease.
  • Ask whether a stool sample or visit is needed.

Emergency now

  • Use emergency care for weakness, collapse, black stool, or repeated blood.
  • Use emergency care if diarrhea pairs with repeated vomiting or dehydration signs.
  • Do not wait after possible toxin or foreign-material exposure.

Red flags

  • Blood or black stool
  • Repeated vomiting
  • Weakness or collapse
  • No appetite with worsening diarrhea

Possible causes

These are non-diagnostic examples to help frame a veterinary conversation.

  • Diet change or food sensitivity
  • Parasites or infection
  • Inflammatory or systemic disease

Reference guide

What this symptom can mean

  • Feline Immunodeficiency Virus (FIV): Read condition details and warning signs.
  • Feline Panleukopenia (Feline Distemper): Read condition details and warning signs.
  • Intestinal Parasites (Worms): Read condition details and warning signs.

What to track before the vet

  • When signs started and whether they are getting worse
  • Eating, drinking, litter box changes, and energy today
  • Any vomiting, diarrhea, blood, collapse, or breathing changes
  • Recent stressors, diet changes, medications, or possible toxin exposure

When to get care

Use the intake flow if you want a structured way to organize the symptom details before you contact a professional. Seek prompt care when signs are severe, worsening, repeated, or paired with breathing trouble, collapse, pale gums, pain, or inability to keep water down.

How to use this page

This symptom page is educational only. It helps you collect context and compare related condition pages, but it does not replace a veterinary exam or final care-routing decision.

Need guided next steps?

Symptom pages are educational references. Start symptom intake for guided questions and personalized care-routing guidance.

Start symptom intake Find care near you Find emergency care

Frequently asked questions

Mild one-time stool changes may be monitored, but repeated diarrhea, blood, vomiting, or appetite loss should be triaged.

Track stool, litter box visits, appetite, water intake, vomiting, energy, and recent diet or medication changes.

Related conditions

Feline Immunodeficiency Virus (FIV) Read condition details and warning signs. Feline Panleukopenia (Feline Distemper) Read condition details and warning signs. Intestinal Parasites (Worms) Read condition details and warning signs.