My Cat Has Large Poops: What It Means
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A cat producing unusually large poops may be eating more than usual, have a high-fiber diet, or have a digestive condition that affects absorption.
Updated: 2026-07-31
Quick Answer
Large cat poops can result from increased food intake, high-fiber diets, or malabsorption conditions where food passes through without being fully absorbed. If large stools are a new change or occur with diarrhea, weight loss, or appetite changes, contact a veterinarian. If your cat is otherwise healthy, it may reflect diet or eating habits.
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What This May Mean
A cat producing unusually large poops may be eating more than usual, have a high-fiber diet, or have a digestive condition that affects absorption. Large stool volume can sometimes indicate that food is passing through without being fully absorbed, or that the cat is simply eating more. The significance depends on whether other symptoms are present.
Cats are obligate carnivores, and their stool reflects diet, hydration, and digestive health. Because most cats use litter boxes, owners have a regular opportunity to observe stool color, consistency, and frequency. Changes in litter box habits or stool appearance can sometimes be the first sign of a health issue, which is why paying attention to what is normal for your cat is important.
Possible Causes
Several factors may contribute to this stool appearance in cats. A veterinarian can help determine which are relevant for your cat.
- Increased food intake or larger portion sizes
- High-fiber diets that produce more stool volume
- Malabsorption conditions where nutrients are not fully absorbed
- Changes in diet that alter stool volume
- Normal variation in some cats with larger appetites
Keep in mind that stool changes can result from more than one factor at the same time. A veterinarian can perform a physical exam, fecal testing, blood work, or imaging to narrow down the cause. Avoid making assumptions based on appearance alone, since different conditions can produce similar stool changes.
Home Observation
When monitoring this change at home, the following details can help you and your veterinarian assess the situation:
Note the size and frequency of the large stools and whether this is a new change. Check for diarrhea, weight loss despite eating more, appetite changes, vomiting, or lethargy. Record what and how much your cat is eating. Monitor your cat's weight over time.
Litter Box Monitoring Tips
- Scoop the litter box at least once daily so you can notice changes promptly
- Note the number of stool clumps, their size, color, and consistency each day
- Take a clear photo of unusual stool so you can show your veterinarian
- Track whether your cat is spending more or less time in the litter box than usual
- Keep a simple log of dates, dietary changes, and any other symptoms
When to Contact a Veterinarian
Contact a veterinarian if large poops are a new change, or if they occur with diarrhea, weight loss, increased appetite without weight gain, vomiting, or lethargy. These signs may indicate malabsorption or other digestive conditions that require evaluation.
Signs that warrant urgent veterinary attention include:
- Large amounts of blood in the stool or dark, tarry stool
- Repeated vomiting, especially with blood or coffee-ground material
- Severe lethargy, collapse, or weakness
- Pale gums or signs of dehydration (sunken eyes, dry gums, skin tenting)
- Abdominal pain, swelling, or distress
- No stool production for more than two days with straining
Kittens, senior cats, and cats with existing medical conditions are at higher risk of complications and should be evaluated promptly.
If you are unsure whether the situation is urgent, calling a veterinary clinic for guidance is a reasonable step. Many clinics can advise you over the phone on whether your cat should be seen immediately or can wait for a scheduled appointment. Having a photo of the stool and a record of when changes started can help the veterinary team triage the situation.
Frequently Asked Questions
Why are my cat's poops so large?
Large poops can result from increased food intake, high-fiber diets, or malabsorption. If the large size is a new change or occurs with other symptoms like weight loss or diarrhea, contact a veterinarian for evaluation.
Are large cat poops a problem?
If your cat is otherwise healthy with a good appetite and stable weight, large poops may simply reflect diet or eating habits. However, if large poops are a new change or occur with weight loss, diarrhea, or appetite changes, they should be evaluated by a veterinarian.
POOP SCANNER
Describe what you see and get a prioritized, evidence-based assessment of possible causes.
This tool provides general information and does not replace a veterinarian's diagnosis.
Sources
- Cornell Feline Health Center, Cornell University College of Veterinary Medicine
- VCA Hospitals, Veterinary Clinical Articles
- Merck Veterinary Manual, Merck & Co., Inc.
Disclaimer
This article and the PawAI Poop Scanner tool provide general information and do not replace examination, diagnosis, or treatment by a licensed veterinarian. If your cat shows concerning signs, contact a veterinarian.